case 580k dump valve handle won't go to the right

Have a 580k when try to dump the bucket the lever won't go to the right unless i push forward a little. if bucket is off the grouns 3ft then it works. The assembly is back inthere hard to see. so before i disassemble thought I would ask has anyone had this problem and what the solution was.

case 580k dump valve handle won't go to the right