I have a "head scratcher" here fella's any help would be much appreciated. We have a Daewoo GC30s-2 that has a lift issue. With no load on the forks the 1st stage of the mast completes its full travel to the top before the second stage begins to travel upward just as it should. However, when forks are loaded, the second stage will begin to travel upward when the first stage is only about 6 inches off the floor. All the stages then telescope as they continue to full travel.