Well, I ordered the O2 sensor today - I choose the R22D style one (the oms brand) from leisure pro (it was in stock and they sell the wenoka knives and a few other little things I needed) Hopefully it'll all work! I can adjust the resistor as needed as I have plenty on hand to choose from.
There pretty easy to do!
I have updated some of my notes and put them online of my progress so far -
Franks Scuba Diving » Frank’s DIY O2 Analyzer