I have the Hd 500 with a JTV89 now - and it seems like randomly, I lose my tunings on patches. Just a bit ago, I played on a patch that I had done several days ago and was saved and after coming back to it (after powering off the HD 500), I went to the patch and the tuning that I had configured was gone. I had to go back in, go to the menu and select and change the 'variax tuning' from don't force to custom and resave. When I went off of 'don't force' the original tuning was there but it didn't 'catch' when I switched to the patch.
Seems odd and bug-like. Anyone out here have a similar experience?