And one note about tank
On the tanks leaking, this is due to the screws that secure the fuel line clips being too long (M3x8mm). Replace them with M3x6mm screws and everything should be fine.
(quote from NT48 thread)
It is a good idea to replace those screws on buggy tank too, esp. outer two from the pipe side. I've interchanged them with batt cover screws, because they're too short for radiotray to have a good grip. Inner two screws are ok because there is splash guard adding amount of non-threaded area.