Well, I said to pay close attention to cyl. #2 and there you go. It's almost always #2 but sometimes #3. If I'm right, one of the exhaust valves has beaten the valve seat to death. Do a leakdown test to verify the pressure loss is from the exhaust. If it is you'll need to remove the head and inspect the valves/seats. If you find wear/damage, cylinder head replacement is your only repair option, AFAIK. The after-market may have a cheaper repair solution???