Cylinder plating needs to be done by a specialist company, here in the UK you could count on one hand companies capable of doing this. It involves cleaning the old cylinder and re nikasil the surface. Are you sure this is the problem, when you say the cylinder has died, do you mean it's not firing, ie spark, have you looked at all the obvious, ie plug, coil, etc. If you google Nikasil cylinder replating, you should be able to find a company that does it. Normally, if your cylinder needs replating you will need a new piston as well, so the replating company will need the new piston as well. One of the big problems of owning such a machine like this, is, nowadays modern mechanics have no experience of these engines, and some probably wouldn't have ever heard of Nikasil. Try to find a two stroke tuning specialist, or talk to Rising Sun Cycles, these should point you in the right direction. Good luck.
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