My 3520 has a bit over 500 hours, I purchased it used a year ago. The Right Steering Cylinder Ball Joint has no grease fitting and the rubber cup around the joint is torn apart. Do I need to replace the whole cylinder assembly or can the ball joint be replaced separately? It isn’t an emergency but I don’t like the inability to properly grease it and I’m sure dirt and sand is going to get in there. Thanks for any thoughts or experience with this!