Hey, thanks for the reply. Do the mounting bolts go up from the bottom so that the nut is on top? Or down? Is the large washer under the floor, or are there two?

The mouting brackets on my seat seem to be attached to the legs with large rivets. In the hardware kit you linked to they seem to be attached with bolts. I'm thinking I might retrofit mine for bolts, as it seems like it would be a lot easier to remove the seat.

I'll let you know what I find about that left rear mount.

Kurt