eyevahn 2002 Corolla 173k miles, dinking 1qt of oil per 200 miles.I recently pulled and disassembled my cylinder head. The entire combustion chamber was black. The tops of the pistons, bottoms of the intake and exhaust valves... everything caked in thick layer of burnt oil. The exhaust valves were caked half way up which increases my suspicion in a plugged catalytic converter.Anyways, I had .010 machined off the head and will be reassembling it and reinstalling it soon. Will .010 throw the cam clearances and timing off? What do I need to do to adjust for the change in cyclinder head. Thanks.