Is there a way to remove these stripped crank arm bolts...? Not sure what happened before I owned the bike but when I tightened the bolts in question to the recommended torque, the wrench slipped in the hex socket and stripped them. Now I need to remove the crank arm to tighten the bottom bracket, but i can't get the bolts loose! Trying to save the crank arm of course, but if i have to cut it off i guess I'll go with that. (Ultegra r8000)

Anybody do this before? Any help would be appreciated...!