Very pleased with self today. Went to the garage to sort the centrestand play before considering slinging the motor in. Centrestand foot was bashing the l/h silencer, and has put a small dent in it. When I checked, the stand would come up to its normal position, then would 'travel' about 10mm further to hit the silencer.
When I took it apart, the frame lugs were pretty good and took the shaft with relatively little play, the centrestand holes, however, were massively enlarged with the shaft wobbling all over the place (bit like the crank before Bergs sorted it). So, thought about bushing the centrestand holes to tighten everything up. Discovered that the shaft would fit very snugly in a piece of 15mm copper pipe. Cut some bits off an old pipe and managed to drift a piece into one side very snugly. The other side was bigger, so I found a piece of pipe that had a straight join in it (thicker). Cut that and drifted it into the other side. Had to ream it out a bit to get the shaft through. Next, after applying loads of grease, and with the bike wedged against a wall, I attached the spring and got the shaft through the first bit. Incredibly, the shaft went straight through to the other side with the simplest persuasion and without knocking my 'bush' out!!! Finished off with some washers (like shims really) to keep the bushes in place and stop the shaft moving too much. Back in with the split pins and time for a test - bloody hell it works!! Stand comes within about 4ml of the silencer when pushing as hard as I can. Dropped it off the stand and - no clang against the silencer.
NB. I know steel and welding would have been better, but I don't have steel and can't weld. Also, didn't want to drill out the centrestand hole as the one side was so large the metal was getting a bit thin anyway. Copper is a soft metal, but it doesn't move that much and has a ton of grease on it. Should outlast me, I reckon.
Finally, cleaned everthing up (cack everywhere), removed bottom bracket from rear mudguard as it had cracked (still in one piece though), greased stand shaft - now I'm ready for the motor!!!
One question - what is the best way of putting the motor in and what order does it go back together (i.e., gearbox, motor, engine plates, etc). Good day, cheers all.