Did you try the method I described? If you did it should have come off easily, you dont use any force, the motor does the work for you. Uless you did it wrong and didnt set it up correctly, that should have worked for you.

 

ok after i put my car all back to gether i decieded to give it one more shot. so over a period of an hour i shot it ever 20mins with some wd-40. that little f'r fell right off. could not belive it. so easy. dont know why it never worked before. btw i noticed quite a bit of differance with it on. in second gear just by flooring it i can spin the back tires before they fully worm up. took my little bro for a ride with out telling him that i put it on. he said dam whats up with your car it's like you've got 20 more hp. i doubt that i did but i got a noticeable amount.