P-rod quad o-ring size for bstaley tune

[FuzzyGrub]

Thank you very much John!!!  If you don't mind my asking, where did you buy your spring from?  Also at 16fpe, what is your fill and shot count.

Again,

Thank you,

Dave

I bought the spring from McMaster-Carr, but the exact part number does not look like it is available anymore.

24 shots @ 16FPE W/14.66g FTT, within 4% ES, on a 3K fill