I recently bought a used Prostaff 6.0 - 95" that I really enjoy. The leather grip is really smooth due to the years of use and tends to be a bit slippery (and tacky at the wrong times). I've tried it with overgrip but found that I prefer the weight and size without. (Would buy another one if it were readily available.) I will buy a new leather grip if necessary BUT is this a possibility? Has anyone tried to 'roughen' up or give texture to an older leather grip before? Sandpaper? Any adverse effects?