I'm not sure which version you have, but there is a 2nd hole on the hinge for more adjustability. Try that first to see if that helps.
One other thing about AutoEXT jaw - some people are now using it as a clamper. Some seem to really like them. For this , you'll definitely have to move the hinges out to a 2nd hole. I'm actually developing a new multi-pe device that could do both with adjustable clamping mechanism.
Let me know how that works out.