13-03-17, 05:05 PM
I've only ever had progressive springs fitted once and absolutely hated them. I had similar issues to yours and went back to linear springs. Problem solved, although that was on a GSX1400. I have had the clunking noise on my Gen 2 though and that too was after fitting braided hoses. It turned out that the front calipers were worn and the clunking noise was the brake pads moving in the calipers under braking. I managed to find a very good set of second hand calipers, that came off a very low mileage bike, at a breakers for £120 and that too solved the problem. Can't help with your fuelling problem sorry.
I could change my opinion, but then we'd both be wrong.