just ground my stock plate today and was wondering where the governer arm is supposed to hit the 100 plate with such a slim profile

 

The arm needs to hit it slightly above the lower edge and travel upwards on the face of the plate smoothly with the least amount of resistance possible. That is why many people (including myself) polish the face of the plate as much as possible, to almost a mirror like finish. My .02

 

Does anyone make/sell 10 and 100 plates? I was going to mill out 2 and polish them up but i cant see having the time to do it for another few months.

 

Plenty of people sell #10 plates (e-bay, TST, PDR, BD), and #100 is just a #10 with the top end defueling grinded out. It really doesn't take very long to grind it out and polish it, the whole process can be down in about an hour or so when modifying the stock plate.