I'm assuming here that the problem you're having is the pan doesn't clear the studs completely when dropped the two inches you can move it.
You should be able to get away with some small cuts in the gasket. What I would try were I in you're shoes is get a gasket and then cut slits in each of stud hole from the outside in. This will leave a solid ring of material along the inside of the studs to seal. Then bend the gasket slightly, get it inside the pan and then pop each stud into it's hole thru the slit. If you can get it in place without tearing the material at all then the slits you cut should line right up again. Even so I would use a little high temp RTV on the slits just to make sure it holds togeather.
Most of that plan depends on a fairly stout and flexible gasket. If you get one of those crappy paper jobs then you're probably going to rip doing that. If all you can find are the cheap paper gaskets you may be out of luck and back to square one.