Like the guy a few topics down, I keep getting blisters on my thumb if I haven't played a lot in a while. My palm is also starting to tear (because of gripping the racket too low, and the buttcap scratching my palm. I haven't played "seriously" for a while now, just helped out with a younger class. So now that I try, I have a partially forming blister on my thumb, and a teared palm O_O. Any help?