The silver ones probably have got bits of paint missing but because they are silver it's hard to spot. The black ones I've painted I haven't torqued down yet so we'll see what happens with those - no special application though, wire wheeled, then primed twice and painted twice.

Some of the other new bolts I've purchased are specially chemically coated black and they don't strip when torqued.


I hear ya......to be honest I did have paper towels down all of them (check in the past pics) until I manually turned it over by hand last week. They'll be getting filled tonight before I clean up the manifold surfaces!