Well I appear to be chasing my tail a bit but hoping I've missed (or forgotten) something at this point. I had my Seppuku and EZUHF RSSI working just fine on NEAT on PPM ch8. Then a little over a year ago I had a crash that took out the receiver and ordered a new one. After getting that receiver I updated my ImmersionRC firmware to the lastest 1.53 and at the same time updated to Next on Seppuku. I've tried downgrading back to Neat and now I'm on Inconceivable but not getting a proper RSSI reading. In inputs I have RSSI set to PPM on ch 8 and when switching on and off the radio I get 1000 under current for on and about ~1200 when TX switched off. Also noticed a difference when the quad battery was not plugged in...~1450 when not plugged in and TX off.
I don't remember there being any special settings other than setting up the input for Seppuku, am I forgetting something?