This cam was sold to me buy a reputable member and engine builder on here some time ago and was sold on to AndyM1 recently. It was unpacked put in my wardrobe safely and then repacked and sent to current owner well packed i will add. Think everyone is getting a bit carried away and just putting there paranoid crap in this guys head. As DD said use it if theres no sharp bit i have pulled down engines that ran fine and rebuilt them for the owners cause they wanted to just fix all the oil leaks and they had internals in way worse condition before machining and replacing bearings etc.. This is why I get fed up with this site to many lunatics spinning all there theory on to others. If you have a problem with it Andy talk to me and we can sort it out like Adults. Cheers Andrew