I just recently switched to a JW powerglide case with a rollerized tailshaft. When I went to install the recommended nitrided yoke (STRANGE) there was a problem. The only way to get the yoke to go onto the output shaft is to force it on. I called JW and they said this was normal. Now when I say force, I mean tapping with a mallet pretty hard. The driveshaft will not float at all. I did try driving the car around the parking lot just to set how it would do. When I got back and put the car on the lift the driveshaft would not come out of the car. It bound against the rear pinion flange. The rear wheels could barely be spun by hand. I ended up using a 2X4 and a hammer to drive the driveshaft forward enough to clear the pinion flange, then did the same to remove it from the transmission. Once the driveshaft was remove the rear wheels spun freely. Is there somethiing special that needs to be done to a rollerized set up? The old Strange yoke slides on just fine. Any thoughts?