????'s about studs in intakes

[1974ChevyC10]

ok on my intake-its an edelbrock performer.when my uncle put the studs in the manifold thermostat housing he cut them from a piece of all thread but he made them way to short to run the proper upper alternator bracket and the bracket he came up with frankly sucks and i want to put everything back the way it should be so my belts will stop squealing from not being tensioned correctly.my uncle when he put them said he epoxied them to the manifold so if i remove them they will break.my friend showed me a trick once that if you tighten two nuts on the stud and then walk the stud out with the lower nut i believe the stud will come out but my concern is that if he did epoxy them in what will happen if i try to take them out and is there a way i can get these studs loose without damaging my manifold-my budget currently wont allow me to buy another one unless i really have to.any tips would be great.thanks in advance guys.