Hi there I have been going through some of the wave forms in the HEX section of my PX560 in and I noticed a few wave forms in that section sound strange. I am not sure if it is a fault or sampling of instruments being blown through by a musician with making a sound.Can some please load on their PX560 for example wave form number 573 DI ZI 22 in the HEX layer section GM . This particular one sounds like a low level noise of a broacast radio with some static. Wave forms 571 and 572 have a real instrument sounds so I sort of expected a similar sound on wave form number 573. Another issue is does any one know how to change and store the backing instruments on the preset tracks. For example there is one called Condor and I can change any of the backing instruments via the mixer but I notice after the midi file completes and restarts the cycle the backing instruments default to original. I tried making a user copy of the preset file but still does the same thing. I can edit the notes and timing easy enough but the only way I found to change a backing instrument is via mixer icon. Thanks in advance.