Instead of just setting program change 9 to load preset 33, could you also set 8 to load 32 and 10 to load 34 to be sure that you're not dealing with an off by one error.
If I were dealing with this problem myself, I'd also as another test take the MIDI cable that's feeding into my H9 and connect it momentarily to a computer instead to be sure that the H9 is actually receiving what I think it is. You can use MIDI Monitor on Mac and MIDI Ox on Windows to do this. At the very least it would be best to connect the H9 directly to the thing that's creating the program change messages instead of putting it at the end of a MIDI chain.
