Panic, is thet stuff always going on in your head? It must hurt sometimes. No wonder you used to be so cranky! Wow, That is a lot of thinking. So you are saying that the charistics of a given crank can be used to predict at what rpm harmonics will cause problems and then a dampener can be built to even them out at several different rpms? I thiought they just kind of deadened them as they came by. Beater