They must have made a few mod's to the original as it took all but five minutes to put mine on. I had to use the washers they sent, but they sent a good drawing along with it.
If you ever have riden with Oldroadie a short spin is 350 miles.
It really comes in handy I find you are not wiggling around in the seat and switching back and forth from the rear pegs to the floorboards.
John
It was a little strange at first, but I quickly got use to it and if you have a bad back or get the monkey butt this addition really helps.