[springin]

I had the same thing happen while installing a brand new Demon. I was installing a stud for later removal and cut-off. Once I had the stud sized to the proper length, I couldn't remove it. It siezed and broke, luckily for me, it broke about an inch above the carb and I was able to install a coupling nut to it for a new short bolt.

I wonder if Demons grab a stud a bit more than they should,,,,, maybe some lube or teflon is the answer.