I came across several problems, so I offer my solution. If it doesn't work for you - don't rape it!!! Find another way!
1. After servicing the carburettors I can't roll the throttle to the end
Solution: In my case I have tightened the "screwy thingy" that holds the air filters (sport filters on my bike, not a filter box) at angle. The screwy thingy must NOT interfere with the throttle gadget!!!
2. Sport air filters falling
Solution: In my case I have overtightened them! You must screw just enough so that they don't fall. Overscrewing results in immediately or later, caused by vibrations, falling of the filters.
3. Screwing the gas-tank
Solution: It mustn't be screwed to the end. Just put your index finger (or other if it can fit) under the tank-screws. When you feel the bolts, holding the tank to the frame, aligne with the frame stop screwing! If you overscrew you'll squeeze the rubber vibrations isolators and the bolts thread will be destroyed. Then it takes half a day to remove the destroyed bolts.
4. Gas gauge overturned and don't want to come back
Solution: Fill the tank to the top. Rev the engine to the end.
5. Isolating the anti-dive system
Solution: Remove all the brake liquid. Remove the banjo-bolts from the calipers and the anti-dive. Mount the single banjo-bolts (from the anti-dive) to the calipers. Fill the anti-dive holes with 10mm 1.25 pitch bolts.
N.B. I did it because my anti-dive was leaking. I don't advise to isolate or to not isolate the anti-dive system! The choice is yours!
6. Engine stops when switching from Neutral to First gear
Solution: Get the bike on center-stand. Put down your side-stand. There is a switch, that is pushed by the side-stand. Put up the side-stand. If the switch doesn't come out pull it by hand. Apply WD-40, then push and pull it several times. Apply chain-spray or other lubricant then push and pull it several times.