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Ditto what ScubaLawyer said and I might add that you take off the venturi as well. It is just good practice to disassemble and clean all the parts down to the bone. Once you get the body free, ensure that you get the old micro-o-ring out of it and replace it with a new one. I like and use Bryan's technique to install it using a WD40 spray straw. Bryan has a good little video on Youtube showing this procedure. I would send you the link, but I am at the office and can't get on Youtube.ScubaLawyer wrote: ↑Fri Jan 19, 2018 9:09 pmJust take the lever plate off. Two screws and a nut is all there is. You can then grip the body with a wrench if you need to. There is no guarantee the lever plate is adjusted correctly anyway. I always take it off, run the parts through an ultrasonic cleaner (although yours looks pretty pristine) and adjust the height of the lever to the optimum level on reassembly. Mistral's are very simple and a great performing regulator. Good luck on the rebuild. Keep asking questions. I still do on issues that come up on reg rebuilding from time to time. Mark
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