They did change some stuff on the 560 plastics making it easier to take off the plastics but the bench is still a problem even on those.
Had a couple of 560s in lately and every one has been easy untill i got one with a bench aswell.
"Yeah no problem ill take a look at the carb in a second just let me.... oooh holy mother of god its a bench seat, never mind"
They should just make a revision where the make the bench one piece that attaches to the base
If you own a bench seat and want an amazing machine, swap it some nice bucket or high back seats