Thanks for the answers guys. From the link, I see my problem clearly. I've got all three causes for blood under the thumb nail and under the skin where the nail meets the skin.
Causes:
Reverse Pitch - I don't have a gauge, but it's at least 3/8 reverse.
Span Too Long
Hole Too Big
Since the thumb hole is too big, I've added lots of tape (8 pieces +) which I'm sure has increased my span. I'll try moving it to the back of the thumb hole instead of the front.
JohnP, thanks for the link.