QC or RC, mods? Only "disc" I am aware of in any style trans is the clutch disc. How many miles, how do you drive it?
The clutch and related hydraulics are a well documented weak point on the RC's, and the autos in the QC's don't like to live very long once power adders (superchargers, turbos, nitrous) are added. So yes, the trannies are definately one of the weak points in our drivetrains. Is your warranty going to cover the damage/repairs?