Poseidon springs?

[otobmark]

Are there supposed to be 1 or 2 springs on top of the diaphram of a poseidon 1st stage? I was working over my gear getting ready for summer and my Poseidon 1st had only 1 spring (and some light brown corrosion that buffed out!)and I thought I remembered 2 springs from before. Last year it was serviced by LDS instead of me and seemed to work fine. Even now, I have no problem setting it up and getting IP right. Everything seems fine but I've yet to try it in the water. Maybe I'm just getting confused in my old age but I thought I'd ask. He could have left a part out.
Thanks
Mark

 

[Bob3]

What kind of 1st stage is it?
If you're not positive, rattle off the serial number, I'll try to dig up a parts drawing for you.

 

[otobmark]

On the bottom marked: CYKLON 5000 EN-250 and then under that is: 3950 900856

It is definitely not the "old style". I think this one came w/ a plastic 2nd stage originally.
Thanks again,
Mark

 

[Bob3]

Regulator "3950" uses the first stage "3720".
That illustration shows only 1 spring (some models have 2)

 

[otobmark]

I got your pvt message and have replied. Having all the info is great and knowing I don't need to tear down again is good. So, maybe one of my other regs has the 2 springs and I didn't just imagine it! I'm going to start logging what I do from now on including serial numbers, work done, source of parts etc.
Mark