1982 cb 650 sc nighthawk well i started with just replacing all the head gaskets and o-rings that were leaking last year and figured i would just replace the rings while had it apart, well my rings came finally in and iam prepping the pistons but they seem to need a better cleaning upon further inspection what do you guys recommend for cleaning them up? Also i would like some input on proceedures/tricks to sliding the cylinder head back on. (I have the ring compressors) thanks in advance.