[TenTec] off frequency omni VI+

[wt4t at reagan.com]

My VI+ is of frequency by    .22, Several guys got back and the answers for calibration.of  the rig were from easy to do  to look in the manual. My manual says nothing about the problem, that I can find. or how to correct it. I was told the rig had a txco and all was adjustable with a single  adjustment. Can anyone tell me the correct 
oprocedure  is to correct the problem. Have a very limited bench anymore, if that is required. 
 thanks for any help
 73
 
dale wt4t