Re: New here.
rain won't really hurt them, unless you ride in excessive amounts, then it may short the ignition.
You have an air leak, and I wouldn't keep running the bike until you fix it or you'll be looking for a new engine soon.
As for the clutch, take the cover off, remove the little screw and turn the star nut clockwise a turn and then try it agian. You may have to go a turn ot two.