Clarkbug
ArboristSite Operative
I dont know what to tell you to expect, but I would imagine that the compression would be low until the new rings seat. Are you sure you have them clocked in properly? And what do you mean the exhaust plug? For the compression test, you dont need anything plugged.
Also, is your friends tester the kind that has a valve on the very end of it? If not, you could have a false reading.
Also, is your friends tester the kind that has a valve on the very end of it? If not, you could have a false reading.