I still don't know how I bent 2 valves. I KNOW that everything was installed correctly. TDC with cam @ 12:00. Has anyone else done this? Or have any suggestions? What could have went wrong on the install? Could the rocker assembly be warped somehow or misalign while torquing the head down?

HELP...Need to know what not to do!

87 Toyota 4Runner-RV Head, Custom Grind Cam, Doug Thorley Header, Keith Black Pistions, 2 1/4" Magnaflow cat, Dynomax Exhaust
2003 Toyota Matrix XRS-Injen CAI