Mine is so bad it is time for another seat from parts yard. I'm wearing out the seat cover now. We have three 450,000 miles, 260,000 & 147,000. They are what made it possible to get a new FLHRC.
When I was in college I had a 160 sport, got it for changing out several engines for a guy who had quite a collection of Volvos, better than getting paid... but talk about an ugly duckling, but very reliable.