I'm cleaning the carburetor on my F2. There were lots of gummy greens. Now cleaning out the main jets was easy. It's the pilot jets that I'm kind of stumped about. I'm pretty sure I should be able to look right down the jet and see light at the other end, a nice clean cylinder. Thing is there's only black, and when I put my piece of light gauge tie wire and do a few pokey pokies, I can't poke through, even after they've soaked for a few days. Are the pilot jets so different than the main jets? The Clymer rebuild manual isn't providing these specifics.