I'm trying to disconnect the drive shaft from my 1954 3100 with SM 420 transmission. I got the bell collar slid back all the way. I removed the universal caps, so it's free from the transmission. I'm expecting the drive shaft yoke to slide back about 3/4" to clear the rear bearing retainer housing so I raise or lower the torque tube out of the way. I can't seem to move the yoke all. I've been prying really hard to slip it back. Don't think it's moved.
What would be my next step?

Thanks