I thought you wanted them invisible?
But if those options don't do it for you, why don't you just swap (1) which bar numbers appear when you press which combination, and (2) which actions are on those bars?
Swap the bars in the "Display with:" dropdowns, then for each job, run the following macro:
/chotbar copy current 2 current 8
/chotbar copy current 3 current 2
/chotbar copy current 8 current 3
Replace 2 and 3 with the bar numbers for your extended bars. Replace 8 with any Shared bar number. This will swap your 2 and 3 bars. Unless one of the bars you want to use is shared, in which case you'll need to tweak that. I can give exact code if you can tell me which bar numbers you're using and which are shared/unshared.