My wife got me a Jaguar Magnum for XMas. The draw length is too long for me. I need to adjust it downaward. I have read through the manual and realize that I need to put a lower level module into the cam. My question is, do I need a bow press (or a pro shop) to take the current module out and put the new one in ? I can't get the allen wrench to the screws in the resting position.