Sorry to be blunt, but how the hell do you damage the head on a steel lever bolt? They are hardly made of cheese as some claim and only need 1.5-2 Nm torque to hold the lever firm. I’ve never used anti-seize on my 985 lever bolts, just a sensible torque and never had a problem. You’d really need to crank them up tight to have damaged the head or not be able to get them out.
Rather than buy Ti replacements buy alu bolts, then you’ll get a good feel for how to attach a lever firmly but be delicate with lever bolts. Ok, so that isn’t a sensible suggestion but over torquing alu bolts does give a good lesson in how not to over abuse steel or Ti bolts.