Guys, I'm having a problem with my drive system. Where the drive shaft goes over the input shaft on my 782, I cant keep anything in to hold it together. The roll pins that it calls for fall right out thanks to the P.O. I've been using a bolt and nut to hold it, but now that's not guarenteed. The hole in the input shaft is not only hollowed out, but I have a lot of "slop" where the driveshaft fits over it. Any suggestions? Or am I looking for a new hydro pump?