Problem: Grooving brake rotors

["Mark Walker" <tr250@mindspring.com>]

The front brake rotors on my TR250 are developing grooves very quickly - like
10 miles after brand new.  The rotors just removed had only a few hundred
miles on them and a deep (looks deep, probably 1/16) about one third of the
way out from the center.  One groove.  Matching hump on brake pad.  Both front
rotors.  Installed new rotors and new pads.  Same problem starts.

Any ideas?  Planning to change calipers.

Anybody else experience this?

Mark Walker
TR250