Am I wrong to think that an easier way to use PBs are this:
You use a bind to the key of your choice, turning off all forms, so you go to your human form, and in the same bind your power trays go to 1, 2, and 3 from bottom to top.
Then another bind, it would activate your jelly form, also changing your power trays to be 4, 5, and 6 from bottom to top.
Then, another bind setting you to the tank form, power trays changing to 7, 8, and 9.