My First dual disk did that, but I really abused it alot more than this one.
My OFE also did that, but as I gave it a few more miles, it started holding again.
If it continues to hold, you probably just glazed and you have to re-break it in.
Merrick
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'98.5 3500 2wd 6-speed
512/1021, 21MPG and 65 pounds of boost.
Hers,
'98.0 2500 4wd Auto, Lifted, Straight pipe, no plate, no afc, 38" Boggers, Viper alarm. 108K miles.