nickrose:

It is surprisingly difficult to work out a way to control a box this sophisticated with just three switches. That's why the AUX switch is seriously worth considering.

Agreed – I just bought a 3 button aux switch for my Space to make life easier but found to my surprise that the aux up and down switches only work when the pedal is in Preset mode. Can this be fixed so they always control Pre+/Pre- regardless of the pedal mode?

(I know you can set the external switches to control tap tempo/hotswitch etc instead, but this is an ugly workaround when they are already clearly labelled Up/Down/Mode).