I can't speak to the right toe brake not responding, but I do know that I always have to use the checkbox (or little blue switch in the case if x-plane) to reverse the axis in each toe brake. Otherwise as I press a brake pedal the corresponding brake releases rather than engaging. With the 360 spins being an issue I would almost thing that one of them is reversed and one is not.
Take a close look at is and see if the slide indicators in joystick assignments ramp up or down as each pedal is checked. Hopefully that will shed some light on it.
For the record I have 3 sets of rudder pedals from Saitek (have not used the CH ones) and on one set of them it seems like either there was a parts shortage or whoever put them together was having an off day because only the left toe brake needs to be reversed for normal operation.
Good luck, and Happy flying
Bao