Was driving down the road the other day and there was a big rumble then a bang. Turns out the rubber uj on my rear prop had shreaded itself to bits. Ive got a 300tdi engine gearbox and rear axle out of a discovery. Gone to fit my new rubber uj and bearing however upon inspection the prop is now sitting back around 2 inches so it doesnt reach the rear axle/ rubber. Everything else the transfer box end seems fine to. Im a bit miffed so any advice would be good. Anyway heres a picture of the axle and prop withouth the rubber donut:

