Hmm... could be the gap, but I doubt it. If that were the case, my compression numbers should be higher, because I obviously didn't gap them enough. Plus the totalseals dont HAVE a gap, so they should be higher still.

One of the Totalseal rings (cylinder #3) somehow spun around 180 degrees and became a conventional ring. My compression was 170 - 171 - 165 - 115. Note cylinder #3 is 5psi lower than the rest. So it looks like the "Total"seals might only give you 5psi extra compression.

Also, just a note, Mike W at RRE claims Totalseals are crap, and they won't use them in his shop. See the SocalDSM list.