i am trying to replace the studs on my Twin H manifold with longer bolts in order to put more gaskets on the base of the carbs. I was able to remove the two studs for the rear carburetor by spraying them with PB Blaster and using two nuts tightened against each other. I tried the same method on the front studs but only managed to strip the nuts on them. My buddy is a welder and he wants to weld a nut on each stud and then heat the manifold where the bolts go in with his welding torch. I'm ok with welding the nut on the stud, but would prefer heating the stud as opposed to the manifold itself. Any advice will be greatly appreciated.