Was it a capacity issue? For the amount of work why not just buy the 2.5g IMS unit. I talked to them recently and their entertaining the idea of doing a screw style gas cap instead of just the drybreak unit...
Capacity issue oh YES. 2.5 gallons will almost get you a ride and when almost just isn't good enough going with 2.9 is the way. All the other bikes are running 3.0 gallon tanks.
When you say amount of work well it was actually very easy. Just take off all the crap from the fender and put it in a different position. No holes were drilled on my installation. Just zip tied everything down including the starter relay. The only thing fabricated was the battery box.
In my opinion Yamaha
built a near revolutionary bike along the lines of sliced bread, toilet paper and other great inventions but dropped the bag by not being able to put a decent large tank on the bike. The Acerbis
carries all the weight down low in line with the whole concept of the bike.