I have a tiger 2 that I just finished rebuilding. I put a used OS .40 FX on it that was given to me and it flew great but was finicky at idle and very sensitive to needle adjustments. I decided to take it apart and clean it all out and found that the cylinder liner was toasted and flaking off. Being that I raced nitro cars I figured i would toss a new cyinder and piston in it like we usually do every few gallons
on the buggy engines.

Is it worth the $58 dollars for a new cylinder and piston. bearings and the rest of the engine are fine? or should I buy a new engine.
the problem is with the car engines a new sleeve and piston is about 1/3 the cost of a new engine, but I see these GMS and similar
engines for about $10-$20 more than a rebuild.

What should I do?