I'm getting a used tri-lam drysuit and I plan on replacing the neck seal, wrist seals and the input and exhaust valve. Who sells a good replacement kit for the seals and does anyone have a recommendation on where to get the valves? I want to make sure this suit is in very good condition before diving it. The suit doesn't leak, but the seals and valves are about 5 years old so I want to replace them whether they need to be or not.