Well, best is to understand the problem before trying to advise.
Let me sum up:
1) Rescue works as expected, Pitch level is adjustable
2) You got the feeling other parameters have no effect
3) To test, you did set different Rescue parameters in banks
4) you got feeling on Bank switch there is no difference in Rescue functionality
A) I would suggest to test if Bank switch is working at all
Easiest way, define different Pitch Ranges in Bank0 and Bank1. After save and reboot, on Full pitch and Bank Switch you should see SP to jump.
B) I than tested with different Stick priorities in each bank 0 (6) 1 (2) and I see SP moving less or more doing Bank Switch and Cycle Input. Needs Power Cycle of unit.
Well due to rain there is no possibility to test outside, but I guess it's also working as such on field.
Regards, Adrian