Re: Any parts missing?
If the company you bought your shift kit from is honest and reputable, I'd call them and ask what they recommend for spares. If they're good folks they'll tell you what they suggest for parts to keep on hand. Obviously, if you've ridden this bike any and had any problems you already know where the weak spots are. Go from there.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"