Yep. I believe there's a later aluminium clutch cover that fits, unlike the '84s.
Honda messed up the 88 CR250/500 forks. They were a step behind the 87 forks, although I'm not sure if the solution is as easy as springs and valving, or not.
There was also criticism of the rear suspension. Probably because that was the start of Honda's idiocy of super-soft springs and too stiff compression valving.