M103 Head Bolt Stripped

[apr34]

Just started the fun process of replacing the head gasket on my TE and it seems that whatever moron did the head the last time stripped the head on one of the bolts while installing it. I was able to barely break the bolt loose before the threads were completely ruined, but now I am unable to get it out any further than that.

If anyone has run into this issue before or has any ideas for getting it out the rest of the way, please let me know. I'd like to avoid having to drill it if at all possible.

Thanks!