I bought a beautiful new cobra shift knob, however, I can't get the stock one off! every time I go to take it off, the leather on the knob twists and the knob doesn't. there are no screws that attach it to the shifter, nothing! In my gt, the thing just screwed right off, so likewise I thought this one would be just as easy! I have used super grip pliers, the whole nine yards. Can someone help me please?! I want to put on my cool new shift knob!