My only suggestion would be to purchase the following for sharpening.
two sided diamond stone with 600gr and 1200gr ($30 for G5 $55 for DMT)
Strop ($7)
Yellow stone stropping compound ($6)
I have tried every sharpening method known to man for these heads and using this method.
http://www.youtube.com/watch?v=_sMTcc_CmXg
They are shaving sharp and ready to hunt. The last deer I shot was in the chest strainght on at 20, the arrow exited the rear ham and did not go far. They are a great head, now go forth and kill stuff.