Larry, you're only 3 hours from me via a beautiful twisty road through Boone. One day later this spring or summer we should meet up there.
Here's a pic with the cover on:
The stock cover fits fine. It is stretchy. The only part of the modification you will notice visually when you put the cover back on is the small forward section of the pillion seat that I carved back and flattened (vertically) a bit. I don't think it looks bad, plus it gives me a "locked in" feeling in the seat. It touches the lower back, upper pelvis area and probably provides just a bit more seating room. Feels great.
A few tips: Careful pulling the stock staples out. Wiggle them up with a small screwdriver and then use pliers to yank them out. You can stop pulling staples about an inch or two aft the seam in the seat, then peel the cover back. They put a TON of staples in that thing. I only replaced about half the staples that were there to begin with, which is more than enough. The passenger foam lifts right out. Don't remove the pillion foam, just carve it right there on the pan. Put on a particle mask!!
For the rider's seat, draw a line about 6 to 8 inches in from the rear of the seat, on top. Then slowly carve from the rear to the front, back and forth with the drum sander (or other abrasive device) The idea is to remove the upward lip on the rear part of the seat, along the same plane where you drew the line. Don't take too much foam away at first, but also don't worry about the foam being too thin. There's plenty of foam there.
The blue foam pad squares are self explanatory. I used hot glue. Cut to size and put them on the forward half of the pan. None on the rear. Staple cover back in place, use short staples. I think mine were 6mm but I can't remember. The staples were my only expense here... about $3.00.
Ride report: I got about 1 hour and 45 minutes on it after work today. I set out with the intent of being mindful of the seat. Typically, after less than an hour, my arse begins to feel the burn. When I returned home I realized that the seat never crossed my mind the entire ride. I was enjoying the beautiful weather and the pleasant NC spring scenery. I'd highly recommend giving this a shot before dropping big bread on a new seat. If it works for you half as well as it felt for me today, you will consider it a major success. Also, there is no sliding forward anymore at all. No more "front wedgies". I'm loving it and can't wait till I have the time for a 5 or 6 hour day in the NC mountains!!