I have been struggling exactly the same way and I think I started to understand what is going on soon.
My question for you is How do you know that your cell is generating chlorine?
I had the Scc-25 and replaced it with this one:
Resilence Salt Cell Compupool A5-E5C | Pool Supply 4 Less
I am in Boston, so swimming season is only three months.
I got it in June 2013 and after two months the water started to leak from the electric cables
They replaced the cell and I was able to change chlorine production from 10-100%.
Used the cell three months in 2014 and two months in 2015 and again the cell got stuck at 10% chlorine production that I can change. It didn't cross my mind it is gone bad, but the water looked bad and I shocked the pool to close it before the winter even the water was dirty.
I opened it a month ago and I can't tell you how bad the pool was, I am still pouring chlorine in for four weeks.
Anyway I checked the cell and cleaned it, looks fine except one of the connectors in the power cable is wet again and rusted, seems water is leaking again.
To confirm I disconnected the power of the cell and measured the resistance between the two nodes and it was infinity even the controller tells me it is at 10% production. But it's impossible it could be generating anything because no electric current can flow throw it. I measured the resistance while the salty water is flowing through it.
I took my old cell and measured the resistance while it was empty of water and it was infinity then I filled it with pool water and resistance came down to some number which was expected.
This told me immediately that my new cell is bad and it worked for five months, I can't return it because it's more than two years but I will contact them anyway. Also I am not sure which brand I should trust to buy again.
So what I am trying to say, my swc controller showing me production at the lowest only 10% without being able to change it was an indicator that something was not working and there was no chlorine being generated.