ecca here,after much fiddling with the settings I now have the refuelling truck working,I am parked at Manchester gate 10 using UK 2000 scenery,the truck comes to the right side of the 737 {viewed from the rear} and by empting the plane of fuel first it will put on board the fuel I ask for,my setting for this are ,14.00 -6.25 3.70. hope this is use to other people in setting it up .