2 questions for 225 HP: Head Gaskets I noticed corrosion around head gasket joint just locally (not around whole valve cover) I haven't noticed any preformance problem, but I thought I should disassemble clean the corrosion and replace the gaskets. Can head gasket be replaced without taking off the power head and how hard a job is it?<br /> <br />Secondly on fuel hole clamps: my local shop say they use zip ties instead of the metal clamps, but (on my engine mounted fuel filter) I can't get the ties to close tight enough. Where can I get replacement metal clamps?