I just finished the 4" utility knife I`m making and I had some trouble with the Diamondwood Cocobolo I used for the grips. Every time I drill a hole through it the wood checks a little on one or sometimes both sides. I managed to sand most of it out but a little remains to bug the heck out of me. Any suggestions as to how I can avoid this? I really like the way it came out otherwise. I`ll post pics as soon as I can hook up with my buddy that has a scanner. Marcus