Help needed adjusting SSB readout

Hi all,
I'm new to the group, recently bought a VR-5000 to use it as receiver while on holiday. I've owned quite a few HF-receivers (being a SWL for more then 40 years) and i think the VR-5000 is not a bad receiver (i've seen and owned worse)
The only thing that bothers me is tuning in LSB or USB is 150 Hz off (3.65500 in LSB requires 3.65350, in USB it is 3.6565 to sound natural)
I've only found one message (from 2002!) wich describes more or less the same problem without being specific about wich trimmer to adjust, is there anybody who knows wich of the 3 trimmers to use to adjust LSB and USB?

Regards,
Bjern NL6001SWL
The Netherlands

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