Right i have constant problems from my rear brake that it will not bed in completly and that it slips 
my set up is: 
maggie 04 fresh products blade 
tnn lgms in tnn backings 
tryall rim with a fresh sharp grind 
and simtra frame 
with standard magura mounts. 
I have tnn lgm in phat backings on the front with trialtech forks and thats amazing same magura set up 
the brake is set up square 
what could it be? that my brake is to stiff or that tnns are just shite? 
 
thanks 
tris