[TenTec] Encoder noise on tuning on Omni7

[Dave]

Does anyone  else get encoder clicks on tuning the Omni 7? Specifically I am getting what sounds like a zipper being  zipped when I tune on 6mtrs.
Tuning slowly  I can hear  each encoder step and it doesn't matter whether the antenna is connected or not. It happens worst  about +or- 50kHz around 50.150MHz...which is a real downer as this is the centre of activity in europe! I have tried a reset to no avail although it did reduce the efect on 10mtrs.
It doesn't seem to  matter what step size is chosen.
Any ideas anyone.
73 de Dave...G4DAX