[Devious2xs]

I have a Corbin - great seat. Works just fine with the cowl.

Another option is to modify your seat by cutting and reshaping it using Kemmler Air2gel foam. I have done this on a couple of seats.

 

[Devious2xs]

Apholstery shop prices vary as much as the cost to do the work.

You might think about doing it your self. just remove the cover, take a knife or electric carving knife to the foam, add foam where you want it by cutting and using spray adhesive, and replace cover.

Take a look at the shape of the Corbin seat - notice the flatter area further back.