No jokes, I was running 230 mains. Ran 280 mains in the stock Banshee carbs, put the 280's in the flat slides and the bike would splutter. Even on the dyno, it wouldn't hit the powerband ( would stop at 25hp odd ). We then fitted 260's ( going from the 280's), and still it wouldn't run into the power-band. The guys thought my cdi was shot, that it didn't advance, the one guy suggested pulling off the air-filter and giving it a run then, wham 59hp... Everyone was dumbstruck.
The porting on the RD differs quite a bit from the Banshee, the inlets are smaller too.
My elevation is 4500ft
Somehow I think I was running 22.5 pilots.