How I fitted mine.....
I changed the carb top cable adjusters to a smaller type and made up my own cables.
I used std KR1 jetting, on a stock motor and found it to be OK.
I removed all the internal sound baffling from inside the airbox and the rubber snorkel.
It has a std airfilter, original vacuum fuel tap, and stock steel reeds.
After mucking about tuning the motor myself I went a little leaner on the needle and
primary jet to remove some low speed 4-stroking.
I made nylon spacers to fill up the gap and used RD500 oil injectors (note bore/hole size of injector)
You can also see the mod to the bottom of the balancer pipe to allow for the injectors.
MY VERDICT
I would hate to go back to the std carbs now, I did not fit mine as a massive performance
enhancing thing....I did it to make the bike nicer to ride at lower speeds, especially when its tuned.
They have been on the bike a couple of years now, I use it nearly everyday, its done track days,
and even longish motorway trips. I love the bike, and use it more than any of my others. The carbs
really do 'clean' the engine up, making it a much crisper, nicer bike to ride.