DAK e-mailed me a manual. Thanks for the offer, though.
I'm pretty sure it's the dog plate (13) or the lever (111). It does not give back any resistance when you turn down the lever, unlike the other one. I've already disassembled and cleaned it. I noticed the pin of the hold down has a little play in the dog. He also needs new pads and a retainer set.
BTW which is the best retainer to used with a Babolat ADPGT and the like?
Machines: Gamma 6004 2-point w/ Wise 2086 & Babolat Sensor Dual