Say Bob I had the same problem as you, the lever, or at least the bolt nut, hit the seat. So I took my dremel and ground the holes so they were slots. And now my seat sets at a angle, somewhat, but it clears. I moved it, so it just clears the fender on the left side. Then for the bumpers, I went to a auto repair shop and got some car valve springs, he gave them to me free. They are 1 1/4" across, and 1 3/4" long. I drilled a hole, in the plate, that the old bumpers hit on I think it was about 3/8 inch holes. Then brazed a washer on to one end of the valve springs, and put a bolt down through the washer, through the hole I drilled and put a nut and lock washer on it. To finish it I went to Walmart and got a couple of cane tips and put over the valve springs, they fit real tight, and have been using it that way for over a year, and it works great. The valve springs are softer than the old rubber bumpers was.