So far so good with my truck, she is running a lot smoother since my work on Monday. The lumpy idle also appears to have gone.
I'm considering eliminating the relay from my next install. My thought process (and please speak up if you have an opinion!) is that, with the 50 amp PWM, I can run the PWM circuits power (for the PWM, not the power that it controls to the cell) from my add-a-line in the fuse box. This will ensure that the PWM only runs when the engine is on. Relays, even high amp rated ones, just seem to be causing too many issues.
I am going to need to find a good source for a resettable 50 amp protection. Inline fuses are OK, but a pain in the arse when you accidentally blow one and have to get another. So far, the only resettable breakers I've found are the ones that I had previously which didn't blow even though I was over current by 30% plus.
I'm still working on my low current leakage cell design, I've had to abandon one method due to my inability to work well with plastics (lack of tools) and go another route which I had in mind earlier. This is going to be called 'The Canoe Cell', the name will become clear when you see my pictures