This is actually a question on prepping the engine for timing. The magnetic pickup goes into one of the two holes on the front of the engine. If my memory is right, it goes into the upper hole, the smaller one. Am I right? My memory also tells me that the hole usually needs to be cleaned out. I also recall that the recommended method to clean it is using a drill bit, hand twisting. I think that some one posted about that recently. What size drill bit? Just visually comparing the pickup head to my bits, it looks like 11/32 or 23/64. I don't, of course, want to make that hole too large. I don't want the magnetic pickup to wobble around in the hole. Hence the question, what size drill bit?