Originally Posted by TomB

it sounds like you are stripping not because of the quality of the screws (the standard mtx4 steel screws are stronger than titanium) but because your hex driver is worn out. you should change your 2mm hex every 3 or less months. it should fit int he screw without any play. if you can wiggle the hex driver in the head of a new unwarped screw this is a sign that the hex driver is worn out.

get a new one and see the difference. it is worth the $20 every 3 months, keeps your screws safe from stripping and hence spending $50 on speacial drill bits to get it out!