joezeff,
I did modify the driver butt pad, and it's a good little project.
Here's the link to the photos
http://burgmanusa.com/gallery/Jims-Gallery
From a prevous post
"Just modified my 650 seat.
Took the covering off the backrest.
Sanded the foam down about 1/4" on the Lower 1/2 only, then carefully removed the foam.
Cut about 3/4" off the plastic on the lower portion in the center about 3/4 the width across.
Cut 2 new notches int the 2 pipes to get that extra 3/8" back and locked.
Replaced the top bolt that holds the plastic backrest to the metal frame with one thats about 3/4" longer.
Tipped the back rest foward about 1/2" using a larger nut as a space between the metal frame and the plastic support.
Installed the foam (didn't cut it to match the plastic support) using spray fabric adhesive.
Reassembled the backrest,.
All in all I gained about 1" in legroom, the backrest (buttrest) no longer digs in my tailbone, and supports my lower back at the beltline.
There is about a 1/2" space between the seat and backrest.
Then I took care of the passenger part. My wife said she felt like it kept pushing her foward, only using the backrest when she leaned back.
Well here we go again.
Took the covering off the back up to the backrest.
I marked the foam about 1/2 way between horizontaly.
Sanded about 3/8" thickness off the back 1/4 then tapered it to the mark I made earlier.
My wife being there helped (for the custom fit).
Taking some open cell foam I cut it to fit under the backrest (to fill the space from raising it), to the mark I made earier. tapering the thickness to 0" at the rear.
Recovered the seat (using the origional material)
Time:
Backrest took about 2 1/2 hrs., 1 soda pop and 1 coffee.
The Seat took 1 1/2 hr.
I was going to cut the center out of the seat for a gelpad but we'll try this 1st. She said it's much more comfortable.
The gelpad is always there if we need it.
I have since added the gel pad.
If there is any thing else feel free to PM me
Jim