I have a Kubota Tractor B7200D with a Kubota Rotary Tiller FL1000. The manual show a ASSY JOINT UNIVERSAL 70798-0041-1 (70710-6130-1) bring to find the Min and Max length. I'm thinking about adding a Pat's Quick Hitch Cat 1. Which means it will add about 3-1/2" to 4". Will I need to buy a new...