Alright, I am demoing some racquets and so I need to choose a grip size. My cheapy Wilsom walmart special is 4 1/2 and I hurt my thumb playing with it. I think, among some other factors, was due to too small of a grip. When I hold an eastern forehand grip, my ring finger pushes into my palm. I have literally no space! I'm worried that a 4 5/8 isn't going to be much better. Is it that much bigger? Should I be as concerned about there being no space as I am? Thanks guys!