I wouldn't worry too much about the slow fill.
My PSC 34' is a slow filler as well as a few of my other freinds with PSC's.
If it was a power boat that needed a fill every use I'd be more concerned.
It takes me about 15 minutes to put 35 gallons on my boat. Besides I've done more than my share of waiting for other people at the dock that wanna lolly gag around and go buy chips and beer AFTER they have filled 100 gallons on board.