walked out to start the gade and relized the transmission was leaking out of the rear output seal. i went to change the seal and the driveshaft was a little stuck on the splines so i had to tap on it to get it off the splines, i installed the new seal and went to put the driveshaft back on and the wear ring on the driveshaft doesnt even push into the seal, even with the bolt through the driveshaft all the way tight pushed up against the output shaft the driveshaft will not push in to the seal and the tranny is pukin oil everywhere because the driveshaft wont push into the seal! im lost on what to do except pull the gearbox and split the case. the output shaft has pushed farther out and wont go back in