Dan,

 

Seems to me that you’ve got 3 really, really good cylinders and one that is only really good. Go fly.

 

Bill Harrelson
N5ZQ 320 2,000 hrs

N6ZQ  IV under construction

 

 

Doing the annual on my 320 this week.  Compression check shows 77-78 on cylinders 1, 2, 4.  #3 is 75 and I hear pretty good leakage through the exhaust, indicating a leaking exhaust valve. ..