Is there anything to check like cylinder walls or pistons or anything?I did a leak down test prior to taking off the heads and had 4% or less on all cylinders.Also did compression test and was around 195-200 on all.So I am guessing rings and all are sealing ok.I sprayed some wd40 into the cylinders to keep from getting moisture or rust from forming while i wait for the weather to break to install my heads.The Wd 40 is still puddled in the cylinder walls after 4 days,so must be a pretty tight seal.