Stripped Screws on TE Panel

I was putting in a Plexi Panel on my TE-S and found out two of the hex screws are stripped. How do I go about removing them without damaging the stick?

I plan on replacing the screws as soon as I get them out.

There are several ways of getting the screws out, but it all involve ruining the screws.
[]Cutting a slot on the heats of the screw for a flat head screw driver to remove them
]a bolt extractor kit
[*]Drill (this is the riskiest one as you can risk damaging the stick