I installed my heads today, and while I was lashing the valves, I noticed I was't getting any compression on No.1, after looking at it, No.1 exhaust valve (even with the rocker removed) was not seating all the way. After fiddling with it for a while I could still see daylight through there when I shined the light into the spark hole. So I removed the head, removed the valve, found some crap in there, not sure how it got there I've been super clean, cleaning everything as I go, but it was there none-the-less. Heads I bought new, and a shop installed the valves. Anyhow, is that head gasket good to use after it's been torqued once, but never ran? It's a victor-Reinz regular nitro-seal gasket.