Actuator screws are screwed!

[BA_GTR]

Hey guys,

When I went to replace the front passenger actuator I came across a problem. The at New Oak Ford have completely damaged the screws.. One screw is extremely overtightened, another screw's thread is spoilt allowing it to spin freely without getting out of the actuator and the third screw's head has been spoilt.

I've managed to drill the over tightened screw and break the head off, but I was wondering whether there are any easier ways of getting the other ones off. Any ideas??

Cheers