I'm using an HD Circulator Seat Pad that I got a good deal on. No long rides yet, but much better than stock & removable. Air conditioning for the boys! You might be able to work with a dealer and return it for a refund if it doesn't work for you.
I also have 1" spacers from SpacerJim and some Kuryakyn Dually pegs (a new-to-me set of floorboards are still on the table and WILL be put on soon).
