so it's been a few years since I checked my valves. I just did it (12k miles), all were on the tight side, I went .004 intake and .008 exhaust. I actually did it twice to be sure. I now have the sewing machine "tap". My question is, how loud should they be? I don't ever remember hearing them when the bike was new. so I was just curious how loud should they be? At idle I can hear the sewing machine tapping over the "honest abe" exhaust?