i have just tested both presets on an H8000FW (sorry, don't have a 7600) and they work fine. What do you mean by "4th time" and "2nd time"?
I suggst you try with MIDI CCs.
I hear a click in Levitation Alpha. It's probably caused by input transients in the loop part of the preset. Work_around is to store the preset with loop level at -100dB then raise it, manually or w/MIDI CCs.
Can't hear any noise on the other presets though.