Sorry some of the pics aren't that great.
I cut this lip off flush to let the tabon the seat slide in further.
I also trimmed the inside of the tab on the seat about 1/4". The pic for this didn't turn out.
I also dropped the rear fender bracket down about 1". This let the seat sit down on the frame, and evened out the gap between the tire & fender.
I used a socket as a spacer to keep the proper gapwhen welding on the fender brackets. I cut the bracket off of the frame and made some spacers out of flat steel to relocate the them. I bolted the brackets to the fender to hold them in the proper location and welded the flat steel to the frame then to the bracket.
This is the bracket I made to mount the rear of the seat. It's a piece of 1/8"x3/4" flat steel with holes in the ends for bolts to go through to the fender mount brackets.
This is a side view. I mounted the turn signals to the fender brackets also. The bolts I used were the ones that held the back rest on. You can see how the fender/tire gap is even all the way around. It also gives the bike a lowered look. I moved the seat forward to close the gap between the seat & tank, But that left a gap between the seat and the frame witch is less noticable
The gap between the seat and taillight is about 3/8".
There it is. The ergos of the seat are different. I'm closer to the bars, and about an 1" taller. Now I'm 5'8" and it fits me pretty good. If you're taller you may want to move the seat back and have the gap between the tank & seat. It's alot more comfy than the stock seat.
I know this isn't the most indepth post, and I'll try to fill in some of the gaps with more pics when I can. Questions or comments welcome.