Rear Caliper Allen Bolt is Stripped

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2002 Yellow P5
Ok, on my 02 P5 the allen head bolt is stripped out of the driver's side rear caliper (the piston retractor.)

1) Can I just replace the allen bolt if I can get it out?
2) How do I get it out? I'm wondering if an ez-out will work on it.... It's been soaking in pb since yesterday. The other side is super easy to turn.

3) I assumed that I probably won't get the allen out and ordered a remanufactured caliper. Did I jump too early?

Thanks!
D
 
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