Hey fellas, I was riding the cub on Sunday when a plug decided to back out and eat up my dome thread. I know it's detonation but not sure what it's from. I have 24cc domes and had 149 150 compression, on 93 octane. I think it kud have been from not enuff gas bc I had to use a smaller fuel line due to my normal size gas line melting to my pipe. It could also be from squish but I haven't checked and I don't kno how to. The plug that backed out did look a little leaner than the other, that was the side i had to put smaller fuel line on. I did a leak down test already and passed. I'm goin to order a new 24cc dome and a set of race gas domes from hjr. I already got new fuel Line on the way. All help and knowledge is appreciated. Thanks-rob