There is a cable running from the clutch linkage to a Al cube in the left side of the engine compartment. IIRC the cable is attached to this cube, which is the valve for the hill holder, with a threaded boss(bicycle style). By threading this in or out you adjust the tension on the cable, and the point where the brakes let off. I had the opposite problem after changing my clutch cable, the hill holder would hold on until I was rolling for a few feet.
Yeah, it's under the clutch cable. You can follow the other cable off the clutch fork to under the brake MC and you'll see. It's pretty easy. Stupid Hanes manuals.
Steve
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