This is regarding the HD PRO X. As of a little over a week ago I've had trouble trying to use the Tuner function. When I hold down the TAP button, either on the rack mount unit or my MKII pedalboard, the POD will go into Tuner mode for about one second and then exit again. Usually the current tempo gets thrown off as well. Updated firmware and flash memory and problem still exists. Getting ready to send it in for service but just curious if anyone else has had this problem and discovered any possible fixes.