Checklist
Yeah, since the cap was off, and they just don't fall off, I'd look around for other things as well, especially after you have had it i for service. Sometimes a phone call, or someone asking or needing help will interupt you and you just "Forget", to tighten something...best thing to do when you get it back is to do a once over and then do a thourough one once you get home...I would be specific about the tire pressure that yo want. the book calls for the average person with the average load (once again Average raises its ugly head) if you weigh less than or more than then 1/2 to evena pound of pressure difference may be in order...I'm not a technician and I don't work for a bike company, but I know that for a car on an autocross track it's not hard to see the difference in times in black and white,,,even in stock cars...if you really want to see how your tires are wearing on your car draw three white chalk marks on your tires then drive normal around for half a day. if you are scrubbing the sidewalls you need more air, if the sidewalls are nice and the chalk marks look like where thy should be they're probably right, if not scuffing then they may be over-inflated...and that is not a bad thing for a cart,,,especially if you are concerned about fuel economy...on a bike it is a little different though...check the drain plug, the airbox, valve caps on teh valve stems, chain tension, oil level, chain should be well oiled...you know...AS soon as you ca afford it go to the store or on-line and buy LED's. They are brighter, draw less current,are resistant to vibration and if you lose one you aren't without lights...as you would be with a fillament bulb.