hello everyone I’m new to this and have a question about exhaust stud bold extraction. I was removing the exhaust and managed to break off the nut and bolt. Luckily it broke off with plenty of stud remaining. I tried getting it off with vice grips and penetrating spray but this things not budging. My plan is to slot the end of the bolt with a dremmel and use a flat head to back it out. is there anything else I can spray on it to help it move? My fear is that it will shear off and I’ll be hooped. thoughts?