On the T99 there is a proximity switch for the inner trolley that stops the trolley at the min radius. You have to Push your 2part4 part button to trolley in all the way for example to get the cab off you have to trolley in past your proximity switch. Once you trolley in past the min radius it will throw up 2 yellow arrows on your display of the remote (sorry the Picture I have Has a yellow and red arrow but it will be two yellow unless your up to a limit.) And the trolley will only move in slow speed in normal work mode. To get Back to normal speed you have to go back and select jib length. Because once you go past your min radius it will lose jib length
