Well, not such good news :-(

My #5 cylinder compression was only 57 . . . so my mechanic did what he
called "staking the valve" . . . by rapping on it with a plastic mallet
while checking the compression gage. No improvement.
The exhaust valve is not seating properly so we have to pull the
cylinder and either send it out for repair or exchange for another one
.. . .
Any comments or suggestions as to which course of action is better?