A few people ask to see my modded viscount.
Viscounts have tabs to hold the bumpers on with screws. We had to remove these with a grinder because they were in the way of the handle and bumper. The handle was then clamped onto the seat in the position that it needed to be bolted on then drilled with a drill press. The same was done with the bumper. The holes were squared out with a die-grinder and the 5/16th carriage bolts were then hammered in to prevent spinning.
I had the help of Nick Vadala.