Decided to build a ct ko bought a mfg.date 6/69 it was just a frame engine and rear end. So started looking for a donor this guy said he had one in his garage that didn't run something about the spak plug,I read on here the warnings about one leading to another, Well it wasn't a ct but an st. and so it begins, Has stripped spark plug got that repaired and wantd to paint the cylinder before reassembly, Anybody know what silver paint was used on this originally