Quote:
	
	
		| 
					Originally Posted by johnjzjz  P.O.S. Nutech 383 with spun bearings and destroyed Callies crank! 
 
 i just read that and i have seen many many callies cranks do just that we think its in the metal ( rockwell ) < its hardness was incorrect and sheared off the bearing material and everone we sonicked was cracked a year old -jz
 | 
	
 
Speaking of poor rockwell hardness,
John, did you run across a problem with some of Comp's Cams being too soft a little while ago?