727 yoke wont come out. What's the trick ?

thanks guys, i did try to "knock" the "if it is a" slip yoke off. bronze mallet, 28oz ball peen and 1" brass drift, BIG slide hammer. though i'd ask before heating and beating, lol
the tail shaft from the motor home is slightly different. if you notice the aft bottom end near the slip joint, it's milled flat and tapped for 2 bolt holes. presumably for support during hi torque. ever break a tail shaft ?!? this trans does have a 4 gear planetary setup. thrust washers are worn down to base metal in spots. some heat coloring too. it did get some use !!! see if some heat will get it. i did lift the seal and shoot penatrating oil in there last weekend. thanks again