Compression test 145 except for #3 120. However, believe this is existing problem as plug wire hard to remove, some tears in rubber and the plug was hard to remove and replace due to thread damage (not cross threaded but not sharp either.)

Tapping noise has decreased considerably, can barely hear it. Does seem to coincide with two stroke movement.

Used amplified stethescope with no results.

Drove 20 miles at 50 - 80 with no obvious ill effects .

Thanks,
Tom