Its blue locktite, only a portion is dipped and dry before they install them.
Those screws are so small I dont believe there is an easy out small enough to get to them.
Im afraid if the heads are now toast the only thing left is to drill the heads off. Ive had to do this on other apparatus before. Just go slow, use a vaccum to get the metal as its removed and just enough to get the head off where you can remove the drive. Then you can get a hold of the stud with a pair of small vice grips. The other PITA is finding replacement screws.
“Two things are infinite: the universe and human stupidity, I'm not sure about the former” ~ Albert Einstein