If it were my keyboard I would follow the process that loads the operating system, which is a memory clean and an operating system reinstall. Once the operating system is successfully loaded immediately try program 897 and see if it works with your pedal. It most likely will. Do not load any of your custom programs before you try 897. I'm guessing that your memory is corrupted and it possibly is from a custom program or custom sample loaded which is why you should test 897 before any other custom programs/samples/setups are loaded. I hope you havent loaded programs from other users. They might have used soundtower which is notorious for corrupting the memory of the PC3 series. If you reload the programs and the symptoms restart then you can bet that one of the user programs is causing the corruption.

Also, try another pedal. It's possible that your pedal is functioning intermittedly. My pedal would not work depending on the position of the cable. I'd then try it at home and it would work. Turns out that depending on the position of the cable it sometimes would work and sometimes wouldn't.

Thanks Dave I'll check it out

One other possibility is that the jack you are plugging your pedal into is going bad. If it does it try reassigning the leslie switching function to another controller like a button or the SW switch. If it then works consistently then it is either the pedal or jack that is intermittently failing.

Good idea i'll check that out as well.Thx