Modifications weren't all that bad....just time consuming because I went through 3 different ideas before finding the an acceptable solution!
Here's the easiest, best, and last method I could come up with:
I removed all the OEM seat assembly (seat and 'slider' mechanism, and springs) and installed 2 sections of angle iron across the seat frame - one as far forward as possible (facing 'up'), and one in the back (facing 'down'). A piece of heavy plate may have been better - but I didn't want to take the time torching the large sheet I had (yes, I'm lazy).In the back of the frame, the angle iron was installed 'facing down', and I used the bolt holes where the springs were attached previously. Also, in the back, I used long bolts, bolt head underneath, threads looking up, and with nuts on bottom and top of frame. These long bolts will be the replacement support in place of the old springs. Head of bolts sit where springs used to.
After taking measurements, I drilled and bolted new seat assembly to the new angle iron on the frame.
Note: trial and error according to personal taste and beer gut size: I had to shim up the front end of the seat assembly with several washers; otherwise the seat leaned too far forward after installation.
Also, Be sure that you assemble the seat as far back as possible....you'll need every spare inch you can get.
When doing the next test fit, adjust the long bolts in back of the frame so that seat assembly rests just barely above the fuel tank....DO NOT forget this step - else you may damage the tank the first time you plop down on the seat for a test fit!
Basically, that's it.
Caution - I am only 5'-8" and find that the leg room remaining after new seat installation is just adequate with the seat in its rear-most position. The higher seat position changes the angle of your right leg as you operate the tranny pedal - more 'upright' - feels a bit awkward right now, but I think it will be just fine after a little seat time.If you are much taller than me, this set-up may not work.
I still think the seat is leaning a little too far forward to accomodate my beer gut...I may make some modifications later after a few hours of seat time.
This seat definitely smooths out the ride. There is a weight adjustment knob in the back of the seat - learn your metric system 'cause the weight is marked in kilgrams. 1 kg = 2.2 lb. I found the seat more comfortable when I adjusted the seat to significantly less than my weight. This also allowed the seat to sink lower when I sat down - seat was a little too high for my short legs otherwise.
rt