I picked up an NOS depressurization valve last year. I installed it on the car late last year. I have less than 200 miles on it since I installed it and it failed. Jim had said that would likely happen from the diaphragm being so old. Just wanted to remind people that these NOS valves also need rebuilt. I have one that was rebuilt by Jim i can use but I will get my NOS one rebuilt now just to have an extra.