[ollykiwi3]

definately in the rear.

another thought.. has anyone experienced smaller than advertised pistons when they got them? if the piston is undersized, and its moving in the bore, couldthat cause shatter?the pads appear to have anti chatter tape on them, so relative movement between pad and piston shold be eliminated, but im not sure if the piston diameter is too small for the bore.
cant remember size but its series 2 2 piston caliper.

Im getting the disc trued up this week, and although it is slightly warped, im not convinced its enough to cause this problem.

its a high frequency chatter, not a shudder. sounds a bit like running a damp finger down a sheet of glass.grips, then lets go dozens of times a second.
not sure how else to describe it really.