[Elecraft] Fw: K2 RX - TX PERMANENT OFFSET

[EA1HFS]

Hi from Spain.

My first time here, I need some help.

I've just purchased a second hand K2  with #5768 serial number.

This rig comes with a permanent 100 Hz offset (even when XIT OFF and  RIT OFF)

I mean:
Tuned to receive on 14200.00  I have to XIT it to 14200.10 if I want to be ON FRECUENCY when transmitting.

I've been advised to be OFF frequency many times in the first week of using it.
After using XIT no problem, I'm very pleased with the quality of the rig but I would like to set it same TX and RX freq. 

Easy cure for this offset? Any suggestion?

I dont want to touch config  without hearing your experienced opinion first.

Thanks in advance.

Alberto
EA1HFS