First of all, thanks for the reply guys. I checked again the shock length, short for front and long for rear. I used the shorter ball joint at the front and longer ones in the rear. Measured again the length of both F and R shock. I'm still facing the same problem. Anyways, I trim the ball end shorter and solved it. By the way, I checked whether if it was the 2097 which was causing the problem but it wasn't, although it was very close to touching the screw within.