A company who do cold stitching is Surelock. They repaired the frost damaged block on my 2 Speeder by stitching in a piece about 2″ x 1 1/2″into the back of the block, not cheap but it worked and as there was no distortion I could use the original pistons.
I find that Scotts can often be difficult to start after an engine rebuild, I think they are so dry that the crankcase suction is poor. I find that a bump down a slope saves a lot of effort and preserves the kickstart. It also allows one to juggle with the controls in order to get the engine to fire.
