In case anyone else every gets in this situation you need a 5mm helicoil with a .80 pitch for the pinch bolt on a DA7700 RD. I got the kit for $25 at an automotive store and I'm going to give it a shot tonight.

The kit comes with a tap, an installation tool and about 10 helicoils. The instructions say to drill the hole out to a certain size, then use the tap to claen the threads and then to install the coil. A guy at the shop told me that since the RD had this all done once before, I should skip the drilling and just 'chase' the threads with the tap to make sure they are clean and then install the helicoil.

Wish me luck.