Disappearing cones, and other issues.

I must say, I do find this enjoyable, however, some issues.

When editing or starting new "sets" I find that cones I place, even chalks, will disappear after I send one, or all vehicles away.  If I send a vehicle in, the chalks/cones will appear whether I want them or not.  This happened on a brand new set.

I take it the limo door does not open?  Or does it?

Is there a way to edit control panel so you can move, lets say an added bus to a set, to put under the 1st bus in the list?  I don't always use drive all, and would like to have things in order.

Is the fuel truck only for bigger aircraft and not small ones?  Trying to set up a fuel truck for eclipse 550, but the hose does not go any lower then the wing.

Edit:   My fuel trucks yellow beacon also does not work during the day, but does at night.   The buses beacon light works during the day, but NOT at night... which is a pretty big safety issue.