Goldtec Hub Bolt issue

Hey guys

I need some help and rather urgently.

I have managed to damage my rear goldtec hub bolt. So i have 3 issues.

1. I cannot seem to get the bolt out. the edges inside where the allen key is supposed to go are almost rounded. How do i remove the bolt? I dont want to try to much right now because i suspect that it is almost (if not already) impossible. What methods can i use without causing the bolt to be permanently stuck in the hub?
   
2. I ordered M6 Ti bolts as replacement but when i compare it to the one on the otherside that i just barely managed to get out, they are *NOT * the same diameter. The length is 25mms. What bolt is the correct size bolt for the rear Goldtec Pro hubs??
   
3. The last issue is im hoping that there is a solution that i can use by Saturday morning as im supposed to be riding on a long journey to a booked B&B.
   
   

Please guys can you help,