Paul-
Really like your Avator. I’m a Brit ex-pat raised here in the states and there are a ton of Brits in Texas.
Ok, we have been through about 4 major import dealer changes in the last 7 years.
The changes, pricing changes, sales demands and other issues resulted in a lot of people letting go of the product line in a highly competitive market.
I used to use the Cyklon and the 3750 1st stages which were a dream. Sold all three of my sets last year.
Best thing I can recommend is getting hold of a manual and know your own parts.
Jet streams are still very popular. In fact Diverite incorporated them into one of their regulators this last year.
Link-
SCUBA Diving Equipment for Technical, Wreck and Cave Diving: Dive Rite, Inc - Product Catalog - Jetstream Regulator
This is a possible option.
Another thing I did was use the Cyklon 2nd stage on other manufactures 1st stages. This provided me access to all sorts of options.
(For anyone wanting to comment- yes you better know your IM pressure of your 1st stage.)
Poseidon Manual can be found here-
http://www.atlantisdiveclub.com/mainmovies/Documentatie/manuals/Poseidon/PDF/manual.pdf
If you go to Poseidon’s web page
POSEIDON - The Ultimate Dive and select US, you can select Texas and anyone of the 17 dealers.
USA link-
WORLD WIDE
Off the record- you can attend dive stores workshops on regulator maintenance and become certified.
However, there are more restrictions to attending one of these seminars than I would like to express.
When you find a shop you like and start doing business with them- that’s the time to ask.
Also when traveling take extra overhaul kits and you can get an adapter to convert Cyklon second stage connection to standard 3/8-24 fitting.
I would not recommend it all the time- but if you break the rocking horse in Cozumel you will be screaming “oh shining light.”
Been there- blown the 1st stage o-ring and had to come up with a solution.
Good luck and if I can help drop me a PM.
Andrew