Any magura brakepad is going to be pants, even if yu have a perfect setup, they just arn't designed for it. However, having a grind should make it slightly beter, but i would just use tar.
-JT! (On someone elses account)
I have exactly the same wheel and i got mine from tarty bikes, and mine some times does creak when i push it from side to side. i always thought it was my wheel that was loose but when i go to tighten it, it is already tight as hell. i don't really know what is causing this to happen but if you give it a good wrench tight it stops it happening as much. So, any one know why it doing it i need help aswell!
Cheers
Ste (Y)
EDIT: my wheel is practically brand new so i can't see that anything would have snapped.