Jazzmaster, being somewhat archtop-like in their geometry, typically have their strings passing over the body and toward the bridge at more of an angle than, say, a Strat or Tele. Also unlike on a Strat or Tele, Jazzmaster pickups can be tilted toward the bridge or head, as well as toward the bass or treble side. So do you tilt your Jazzmaster pickups to match the string angle? Or do you keep the top of the pickup covers basically parallel with the pickguard? I'm still playing with mine (along with the pickup heights and overall balance), but so far I've kept them parallel with the strings. It just "seems" right; I felt that the pickups, being wider and flatter than other Fender single coils, should "meet" the strings in a consistent way (I also use 1.5 degrees worth of shim, to make up for using 10's, so my string angle is perhaps more exaggerated than normal, even for a Jazzmaster). But I honestly have no knowledge to back this up.