I hate doing neck seals, they inevitably end in disaster. One of the few repairs I'm happy paying someone else to do.
Inflator nipples generally can just be swapped over, but I'm sure there will be oddball valves out there that you cannot do it with. Generally they are a 3/8 UNF thread, same as a reg's LP fittings. Remove the nipple and attempt to scew it into a 1st stage port, if it goes then you know the threads match.
One thing I've found useful for old suits that have leaks is water based roof sealant. It's like a thick grey paint, dries to a flexible finish and solves leaks that you can't find. Coat the inside of the suit with it, or just the part that's getting wet, it's good for a few months of diving before it needs renewed.
Last edited by NotDeadYet; 15-05-08 at 10:36 PM.
"i think this post displays/encourages a stupid if not dangerous example/attitude. This applies to ALL your posts so far"