i hope im asking this on the right side, i have a 1710w/50" and i got it for free, the best kind, the tractor is in great shape, anyways the probel mwith it when i got it, was the drive shaft, one of the hubs came apart,and the guy was fed up with fixing it, well i put in all new parts except the drive shaft itself,i didn't have the correct hub that is on the input shaft for the hydro, i used one that looked like what i took off of it, well late last year it started to break the roll pin in the input shaft, the input shaft hole is not oblong,but i did order the correct hub for the input shaft, and there are no differences between the correct one and the one in installed. i have it hear in our shop, and my mechanic thats been with us for 24 years,and has only worked on cub cadets, cant figure it out. any info would be great!! sorry for being winded,. jeff