A couple ideas for you.
You could ask Zack at raft fix.com, not sure he does drysuite repair to, but certainly worth asking him.
You could send it back to the factory, I have done that with my IR before.
A third option that I think actually makes a lot of sense if you are fairly capable, is to go on the NRS web site, and watch there short tutorial on gasket replacement. It really is not that hard to do a good job of it yourself, but the main reason I recommend it, is if you are out on a longer trip such as the Grand Canyon, you will know how to do it, and won’t be stuck with a Leaky drysuite for the remainder of the trip.
I did my own neck gasket before my last GC trip, and ended up helping a friend replace both his wrist gaskets that ripped after a couple days, of a 25 day trip. After watching the NRS tutorial, and practicing on my own neck gasket, the two I did at Nankoweep looked almost factory, and all 3 were water tight.