Yes - I send it anywhere just for the postal-fee: first stage, second stage, octopus and console.
Just don't dive with it.
I don't think Sherwood is supported any longer here in the Netherlands anyway. No use sending this in, I suppose;
BTW on-topic from my logbook: I took it down to 37 meters in the Baie de Brande near St Tropez while diving with the French Department for Underwater Archaeology with a bottom time of 48 minutes clearing torpedonets over a former Cousteau "excavation" of a Roman shipwreck.
It had a 2.5 cm H20-column breathing resistance at the surface on our testing equipment and I have never been able to get it any better. On this depth the resistance was quite a bit worse and i remember the fact it isn't balanced was not a nice experience at the time. However I did some maintenance on a later model that actually performed much better - about 1.5 cm H20-column. Flow performance was poor in both cases.
The only reason I used it was because I saw too many regulators that were maintained by the French Navy who was accomodating the project, were given to stop working under water all together. I had one of those sets as a backup BTW - as we all had. In dutch we have a saying "met de franse slag" [with the french attitude] and you probably can figure out for yourself what we mean by that.
PM sent.
Dave C