[logician]

A recent missed shift (5->2) in my 2.7L race car got me worried about the possibility of a bent valve, and prompted me to measure compression, and then leakdown. The engine burns 91 octane, has 40 Webers, 9.5:1 compression, and mod-S cams -- modest mods. Here are my results:

1: 160psi 4%
2: 160psi 3%
3: 160psi 3%
4: 160psi 2%
5: 160psi 3%
6: 145psi 8%

Obviously #6 is off. Actually, I had not previously measured compression or leakdown, so I can't be sure whether this is a result of my missed shift, or whether it's been that way since I bought the car. My question is how bad is this? Can I continue to run it as is? Or do I risk damaging the engine, i.e. burning the valve or head? My usage is track, so mostly WOT. What is generally considered good/acceptable leakdown compression and leakdown? Thanks in advance for your help.

-Juan