I'm doing some off season maintenance and ran into a snag. The timing pointer on my OMC 350 is so rusted that is unreadable. I tried steel wool, etc. but no luck. It looks to be part of the timing cover. Is there some way to repair it? SOme kind of tape overlay or something? I'd like to tune it up in spring but I don't know how I'll do it if the pointer is illegible. Thanks. John