I think i have the scheme at my parents home, i have to hantarex manuals that i got some naomi spares, i will check it at the weekend
What are you trying to say is the problem? The pincushion distortion? Just adjust the pincushion control on the east/west board. It should be marked on the board - if not, you can use trial and error to find it. Usual monitor safety precautions apply, especially working on it live. ONE HAND IN POCKET!
It the cushion adjustment on the Polo Star monitors, it's on the main control board so it's easy to find. It's marked RV6...