Ok , I got the hf 44991 , Is the belt drive worth the money , Im new at this, my thought is that it might keep me from breaking a gear, ( hope it would get rid of that gear noise)? Also, the mill comes with a drill chuck should I be getting a end mill holder or is it ok to mount the end mill in the chuck?? the manual dosent say much. any input , dose anyone have this belt kit is it worth the money.