Yeah I also have had less than ideal experiences with my Gen II, stuff just seems to.. break. at will.
I'm no expert but even stuff like, for the fuel bung thing on the carb, somehow, while not moving after a long ride, the screw or port lost its thread and fell out as soon as I took off again.. Like.. how does that even happen if its fixed firmly the first time?
And ive been battling with a carb that also seems to somehow bent something internally.. taken days just to work out that it might be that.
Every screw, every nut, every bolt head, seems to strip like as if they are made of solder or something, it's rediculous.
Also the instructions are a complete joke. Barely even worth reading except when you get stuck :/ (not saying dont read them at all haha)..
Over all im just very unimpressed, however the general consensus seems to be quite good on them, so it's upto you. They are ofcourse, exceptionally cheap kits.
Hajuu