I bought a 50 inch snowblowe rear mount to put on my sc2400. I measure the shaft length and it was 24 inche from tip of the PTO on the tractor to the bolt hole on the blower. I also need to leave 2 inches for play so the shaft has to be 22 inches expandable to 24 inches. Does anyone offer that size or do I need to have one made? The one that came on the blower was 28 inches long. I cut it and found out that the square tube inside the shaft is only about 3 inches so do I have to have a shaft made up?