Hi last point first, as it's the easiest to remedy, get your bike on centre stand, or propped up so the rear wheel is off the ground, then adjust your chain, that should cure that problem, IF itdoesn't, you may find that your wheel bearing's need replacing? I would get a repair kit for your fuel tap, as well, as it seem's that it is leaking into the carb's, and dripping onto your footrest!
Merlin