So after having given up in complete disguist (for now) on the 1000 and why it won't hold oil pressure worth a candle, not to mention temperature
I decided the 1100 needed some love
Went back and assembled the relined barrels, new piston rings and cleaned up pistons, a lot of apprehension but the rings went in (eventually) and the engine isn't siezed solid (always a bonus).
The engine is now back together, complete with new valves and guides into the bargain
One more job to do and that was see if I could retrieve the bottom thrust washer on the speedo drive at the back of the gearbox as it never came out with the rest of the assembly. I've gone to Speedhut gauges and have a pickup off the rear caliper support bracket.
Easy peasy, well not exaclty, bloody layshaft nut decided to form a lifelong friendship with the shaft. So lots of hauling later the rattle gun came out and promptly stripped the hex of the Aluinum nut in record time. BLOODY MARVELOUS!!!
2 days on and off with a Dremel and a routing attachment, followed by lots and lots of hammering and the fruits of my labours lie below.
You can see where the rattle gun has efficiently removed the hex, the remaining bit of hex left was under the worm drive so totally inaccesable

The threads on the layshaft look Ok, much to my surprise, now I understand why the nut was made of Aluminum and the layshaft is steel. Oh I managed to Dremel it off by placing the Dremel up one of the channels in the Layshaft so as I could cut the nut but not destroy the threads and much to my surprise it appears to have worked (famous last words)
Wonder what's ready to bite me in the a**e next