last thing i did was to install a adjustable pinion snubber, as it was suggested to help...and i haven't seen it get worse....i think it stopped it....been to the drags since i installed it, and haven't noticed it worse....i only have bout and inch of travel and it hits the rear, kinda limits the travel more..
supposedly they help with launching the car to...gotta admit, makes 60' times improved bigtime....
i never did grind the E bracket, that would be the easiet thing to try....mine still has shavings in it...
For some, its the scurge of the Alum DS....secially when you got 3 or 4 in the car and bang some gears.... thats when i got the BIG gouge...