Hi my 360t been running perfect for years but now the left cylinder breaks up around 35,000 rpm, the left plug is black coated and compression on the left cylinder is 52 psi and the right is 84 psi some one told me that it is suposed to be 170 psi but that don´t seem right becouse the bike ran to good to be that far off, the right cylinder has a clean light brown coat to it.would a bike run that good with low of compression? and can anybody tell me what the compression is, Looks like I´ll be buying a top end kit thanks Ernie