I want to regrip my triple threat bandit with tourna grip, but I don't want to mess up the weighting (it's already 3 points head-heavy, I wouldn't want to make it even more so) by taking off the old grip that came with the racquet. The old grip is much thicker and seems to be heavier as well. Should I just put the tourna grip on over the old grip? I'm afraid that if I do this, the grip will get too large. What should I do? P.S. I'm kind of new to this gripping thing, so yeah. I only want to do this because my friend suggested that I use an overgrip, and he says that tourna grip is good.