Thanks for the quick response. So you used a screw extractor set? I’m gonna try it
I hope it works
thanks

 

and if you put some jb weld on allen bit, let dry and try with an impact wrench?

 

Yeah I was somewhat skeptical at first but I'm a believer now. They've since paid for themselves with other projects.

If it doesn't work as quickly for you, a couple of things to consider in my case was that before the head stripped, I was able to break the bolt loose probably 1/8 of a turn. That could have also helped break it loose. All that is to say that if the bolt extractors don't work right away try heat.