I talked to the guys at TECHNO... and they said the GM mount would not work on bottom, it is too thick, and throws off the angle. But if I keep my stock mount on bottom [even though it is beginning to fail], and add the RT mount with the stub, and it would work, because of the Sandwich effect... So i guess that is the thing I'll do... If I'm gonna spend 60 dollars, I'd rather do it in a way that would improve it over the stock item, that is prone to failure.