I'm a sweaty person and I have an XP-Pen Star G640. When I'm trying to FC a map my hand goes down the pen and by the time I'm halfway through a map, I'm already at the tip of the pen. I've tried using a grip before but the grip would be pressing the buttons. After a while of the grip touching the buttons the cursor would start stuttering and I would fail a map. Are there any other solutions to help my pen be less slippery?