np_completionist

I ran into this problem, too. It looks like the axis settings are sensitive to ordering in the config file. I was able to fix it by doing this: 1. Find GameData\ksp-advanced-flybywire\advanced_flybywire_config_v11.xml and open it in a plain text editor (Notepad will do). 2. Scroll down to the collection of <KeyValuePairOfContinuousActionKeyValuePairOfBitsetInt32> elements. 3. If you have multiple entries with the same inner Value (in my case, two 0 values for my left stick X axis), make sure the one with a zero SingleData (meaning no held buttons) comes before the one with a nonzero SingleData (in my case, 128 for my RB). I sorted that whole section of the file, first by inner Value, then by SingleData. 4. Save and launch KSP.