wow...this thread was back when I was a NOOB...look at the Biturbo on there.
You cant really see it in this photos very well, but.....
I did add a 2" tall x 1.5" dia. hard rubber bushing to the center of the bottom of the metal seat pan. Attached with a 1.75" tech screw countersunk half way into the bushing. I notched the bottom of the bushing so it would set over the flange on the frame (also keeps the bushing centered when sitting on the seat)
