I have seen 2 different thumbs, 3 or more different streamers and some other models. If you are talking about a Warwick how do you tell what type it is? For example there is a thumb with the jazz pickups close togehter close to the bridge, and there is the one with the more traditional jazz placement (roughly one is angled and I don't know about the actual measurements). Most makers have say a jazz, precision, or whatever and then note if something is different precision special deulxe or whatever. I don't get it, can anyone explain?