Cam wiped out, what the hell did I do wrong?!?!?

This is from Comp on Ebay, they sell their used and less than perfect cams on ebay...all very usable. Again way less lift. I would break in the cam using 1.5 rocker arms.

http://cgi.ebay.com/ebaymotors/COMP...r_Truck_Parts_Accessories&hash=item19bde1f393

Cam Style Hydraulic flat tappet
Basic Operating RPM Range 2,300-6,500
Intake Duration at 050 inch Lift 240
Exhaust Duration at 050 inch Lift 246
Duration at 050 inch Lift 240 int./246 exh.
Advertised Intake Duration 284
Advertised Exhaust Duration 296
Advertised Duration 284 int./296 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.507 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.510 in.
Valve Lift with Factory Rocker Arm Ratio 0.507 int./0.510 exh. lift
Lobe Separation (degrees) 110
Intake Valve Lash 0.000 in.
Exhaust Valve Lash 0.000 in.
Computer-Controlled Compatible No
Grind Number CRS XE284H-10
Quantity Sold individually.