Just switched to tablet but when I play I get bad cramps in my hand, probably because of how I hold the pen, is there a way to hold the pen to help against cramps?(i.e how do you hold your pen to give me some ideas) I hold it from the bottom of the grip between my pointer middle and ring finger, against the web of my thumb with my thumb fully extended. After playing about an hour the part of my palm behind my thumb aches pretty bad.