I have a 2001 Magnum 325 4x4 with stripped spline on the shaft from the transmission to the rear differential. I have the diff out and the pin out of the shaft but the prop shaft will not go back far enough to remove the shaft completely. The u-joint hits the swing arm before the shaft will come completely off the spline(on the transmission output shaft). It is close but no go. Do I have to remove the rear swing arm or loosen the transmission? It seems like it should come off. Thanks.