with the arms tq ~110inlbs(yes i have a tq wrench) it made its way off.....explain that one. and hte crank arm bolts had locktite on em.

when i say i went over hte bike to make sure its all tight, i didnt just take a 3" hex key over it. Im a jet engine mechanic...im pretty picky

and yes. after further research on park tools, you are correct aobut the cap for just preload. so i guess there should be no reason it came of except for a defective product since everything was tightened correctly