The Moto-Guzzi Nuovo Falcone VOC

Good that you got the drum sorted.
Cast iron's fine for the clutch basket, but as you discovered, needs handled with some care.
Would have been easier and cheaper than steel I expect...

That doesn't sound good.
No help to you at all, but there was a selector drum on eBay for ages a few years back, and although I'm a sucker for buying parts on a 'just in case' basis, I had never heard of anyone having an issue with one, so let it pass.
You could try Schubert (SMS) in Germany who seem to have cornered the market for parts, Retro in Abbadia, just along from Mandello, or does it look repairable?
Sorry for the tardy reply - pretty much nobody uses the forum these days, so I don't often check it....

Yes Sigean, I’m sure we have been in touch before.
Sadly, this forum has pretty much died, so nobody is there to answer your queries: I Bly found your post because you had replied to a previous one, and I get notification of that….
Everyone is on my Facebook group now, and you would likely get more answers there.
I don’t know where the valves were sourced, as the whole thing was managed by my friend in Austria. He took the head to a small scale specialist in Germany, and he fitted the 8mm valves, guides, seats and lighter springs.
There’s a post about it on here somewhere, I think, although the photos may have disappeared.
The valves are a little too short, and I was supplied with caps to extend them. Valve stem oil seals were also fitted. I have been told that some kind of Ducati valves can be used.
Not much help, I know….

Great result: patience rewarded! 

Very belated welcome Henry!

That’s great to hear.
I suppose the stock bushes might have been SG iron, but mine looked and behaved like steel…
Glad you got it sorted!

A press might be helpful, but locating the swinging arm perfectly in line and adequately supported against the ten tons might be a challenge. One of the other members took his to an engineering shop, who tried and failed to press the axle out. IIRC they ended up drilling it out, which must have been a challenge.
Let’s assume for now that you can press out the axle: at least you have the flanges of the bushes to support the load while you do that.
However, once the axle is out, you’re still left with the two bushes inside the tube, and at least the first of these will be impossible to press out unless you are able to make some kind of expanding collet press tool, that can be slid through the top bush, and then expanded to press on the lower.
And at that point, you have nothing with which to support the swinging arm, as the bush flanges are the same OD as the tube… Mine was in a vice, and by the time I finally got the bush removed, I had cut a slot in the web stiffener, which was the primary reaction to the applied impact.
Hopefully, you can manage to dissolve much of the rust first, and hopefully, that will mean they will come out more easily. You might even be lucky enough that they have previously been replaced, and reassembled with the grease that is so sadly lacking in anything assembled in Mandello!
I wish you good luck, and look forward to hearing of a successful outcome.

Hello my 1971 nuovo falcone runs great ,starts and runs great except if i try to give it full throttle it then bogs down and miss fires until you reduce the throttle opening , you can slowly feather the throttle until a higher speed is reached .am i correct in thinking carburetor issue .it has the standard delorto carb and is totally stock 
regards Oliver

Morning Oliver, and sorry for the long delay in replying. The forum is so infrequently used these days, I don't check as often as I should....
I have experienced exactly the same as you, and for two separate but interconnected reasons. The first was when I decided to protect what was left of my rusty silencer, and fitted another and much more restrictive pipe: the second was when I replaced the stock air filter with a fake K&N style conical filter. In both cases, the result was a mixture that was too rich on full throttle. I was especially surprised by the air filter, as I would have expected a cotton filter to be less restrictive than the stock paper filter. However, many years later, I discovered that the stock filter was sealing so badly, it was effectively doing nothing at all....
If you have the standard silencer, and the standard air filter, then it may be worth considering altering the size of the main jet. You would think that then engine picking up when the throttle reduced would be an indication of weak running (reducing throttle reduces the amount of air, so you would think richens the mixture) but I'm pretty sure that mine was running rich.
From the manual:
Choke: 29mm diameter
Slide: 50
Emulsion tube: 265 P
Main jet: 132 (NB, Mick Walker's book says 122?)
Pilot jet: 50
Needle: V 10 2nd notch from top
Idle screw: 1.25 turns out

Good luck!