Hi all, I’d like to follow up with how I fixed this.
13crusader was right (thank you!), but it was a long and frustrating thing to find.
Setup > Controllers > Advanced > Avionics Control - Radar Elevation - this was mapped to an axis on my throttle which I’d never used before. I’d always used Shift F5-7.
This Sim is so rewarding, but when you come back from a long hiatus like I did it’s all the little things that get forgotten. It took me a good 3 days to figure out all the settings and actually complete a mission without hitting the Discard button to figure out why that thing is not working now.
Anyway, I got in some good hours yesterday and had a great time!