So do I Neil!
Fingers crossed she doesn't eat anything else.
Must have been 'me' though - only reasonable explanation is I must have failed to get the friction plates 100% perfectly aligned last time, and the outer basket attached to the gearbox must have graunched a misaligned one on assembly, weakening it so it fell to bits progressively over time. You can't really see how assembly is going as you shove the engine onto the 6 long studs plus several dowels that hold things together. That's my excuse anyway - and I should make a proper alignment tool.
I also took Rog's point above about clutch cable replacement hassle to heart (hadn't thought of it, but 'tis true, it's a total no go with the bike assembled) - and fitted new. Surprisingly heavy duty - which is just as well. So now it's 'just' putting back on her clothes, the exhaust, the waterworks, wiring, footboards, levers etc. What could possibly go wrong?