I would drill this sucker out and tap a bigger hole, bigger grub screw, leave it at that.
if you use a stainless grub screw I don't think you'll get the seizing problems in the future.
if you're dead set on getting that one out though, try welding something in the hole that will give you more leverage, like a bolt or something you can attach a bar to
I would drill this sucker out and tap a bigger hole, bigger grub screw, leave it at that.
if you use a stainless grub screw I don't think you'll get the seizing problems in the future.
if you're dead set on getting that one out though, try welding something in the hole that will give you more leverage, like a bolt or something you can attach a bar to