eldon kilpatrick

I have a YTH22V42 lawn tractor.  The mower deck sits way too low.  When setting the cutting height on six the actual height of the cut is only about 2 1/2 inches.  I have a lot of scalpng at the six setting onslightly uneven terraine and the sun raises cane with the health of the grass.  When I try to set the cut level to one, the deck sits hard on the ground and the blades cut into the dirt.  I have spoken with the local dealer and he has no idea how the deck height can be elevated.  ANyone have the same problem????