I'm looking for the upper lifting rod pins for a B7200HST. The rod holes on the lift arms are 1/2 inch on both R and L rods to accept a 1/2 inch threaded end, but the right pin hole on the right rod is 3/4 inch and the left pin hole on the left rod is 5/8 inch. I actually only need the left pin - 1/2" threaded end / 5/8 inch pin end. I can't find anything on line with a 1/2 inch threaded end. Don't want to pay Kubota 40 bucks for one pin. Any suggestions would be appreciated. Thanks.