So here´s how to make a custom console plate for the seat:
This is the original built up:
Here is the original frame which will serve as template
Here is the bottom of the seat + side mounts + sliders (those from GTOmega)
This frame you put on a wooden panel and draw the outer borders of it on the wooden plate plus mark the 4 holes to mount on the tubes of the GTOmega
Then you cut out the wooden plate and drill out the 4 holes and premount it on the big console like these. Insert a few screws to hold it in place
Then you put the seat (with the side mounts + sliders fixed on) on it and align it properly and mark the spots where to drill the 4 remaining holes for the fixation of the seat.
You can cut a bit of the middle out to save weight and then it should look like this
To compare with the original console plate (wooden a bit wider to add stability in case if )
Then you mount the wooden plate on the sliders aka seat (the order of this will change from seat to seat, either first on the seat or on the console)
And this is the result: perfectly aligned custom seat with the wheel
It wasn´t hard to do and took me around 30 min.
If you encounter a problem you can always ask for help here.