I've tried repeatedly via email to get correct replacement bolts and there has been no response over a couple of months now. I wasted my money with the risers as I can't use them. While this seems to be a good product, the lack of response to simple email questions is not acceptable.
The only adjustment for the seat is the angle of the back, but I have found it very comfortable even for a full day of paddling. The large cockpit makes it easy to access my camera and other gear I want handy.
I consider this a luxury boat for recreational paddling due to the efficiency, maneuverability, and light weight.