Wireless interference. Line 6 g10

Just wondering if any others have an issue with interference with music man guitars with the active system? I have a cutlass and a valentine with the system and the valentine is intolerable using wireless. There is a loud high pitched whine. With the cutlass the same sound is there but it is about a tenth of the volume of the valentine. So the cutlass is still usable. Not a huge deal because I can just use a cable, but it makes me curious of others experience using these guitars with wireless systems. Maybe there is something I could do to the valentine to get it like the cutlass where wireless is still usable.