I used to know a man who headed up the seat design department for a European car company. He said the work was maddening because you could design a seat that all the designers loved then bring in 100 people to try it out and get 1/3 who loved it, 1/3 who hated, and 1/3 who were so-so about it. Modify the seat, re-run the focus group with another batch of people and get the same results.
Seating position, seat angle, handlebar height, etc. can effect the center of force on your seat. Some parts are more tender than others, ya know?
Fiddling with the position of your handlebars may help your seat comfort issue by changing your posture.
I did 300 miles on Tuesday on my VN900LT with the sock seat and a sheepskin. I don't see any need with the Kaw to spend money on a custom seat, the stock one with the trusty sheepskin on it is ok enough for me.
I've been putting sheepskins over seats now for about four years and find that they do "add 100 miles to your day" and generally take some of the "bite" out of a seat. Never tried the seat beads but some guys swear by them. I had an Airhawk cushion on the seat of my ST1300 for my wife and she loved it but not enough to keep us from buying a $700 custom Russell seat which I hated and wound up selling to a guy who loved it. Go figure.
If you want to try a sheepskin I like the ones from Alaska Leather
. I have no connection to them but do recommend them. I have three of their sheepskins for my bikes and one on the office chair I'm currently planted on. I think you can still use the discount code "deadsheep" when ordering and get a discount.
So there is no guaranteed fix for making a seat comfortable, you have to experiment and see what seems to work and then give the seat time to break in and mold itself to your shape if you're tough enough.
Then there's the whole thing of wearing a particular kind of pants or undergarments to improve seat comfort. I've heard of guys wearing everything under jeans from bicycle shorts to ladies silk undies.
Never tried the undies thing myself, don't plan to but hey, whatever gets you down the road happy.