the rings that I replaced were #81 (both), 79 and 78.
#78 was near destroyed when I broke it down the first time after buying it. both #81's were crimped by them not being seated right before the screw was tightened. #79 was chopped up a bit from #5 rotating.
I need to get a big bag of assorted orings before these ones fall apart. I don't have any more replacements for #78.
