Manatee Diver
Stop throwing lettuce at me!
You pointed this out yourself... The functional linearity is lost from the top of the curve. So in an analyzer when you're only reaching 98% instead of 100% what does that mean for your accuracy at 32%? Nothing, that is less than 0.5% deviation. You get more variability from barometer pressure changes than this.
Yes order a new cell, but while you wait for it to arrive you can continue to use that analyzer
There is also what are you using the analyzer for. I am simply verifying tanks that I know either contain 32% or oxygen. If they were filled with anything else the results would be very different. A bit different requirements from a CCR cell.