Even though you have your matter settled; I’m going to post some pictures.
Here is a side by side comparison of a late model slip yoke output shaft (right) and an early model fix yoke shaft (left) for an NP205.
Here is an early model NP205 fix yoke with the bearing, speedometer gear and spacer assembled without the output housing.
Here is a late model NP205 slip yoke with the bearing and speedometer gear assembled without the output housing.
The backside of the late model output-shaft with the bearing but without the speedometer gear.
Note the inner bearing race is against the splines.
The early model output shaft with spacer and speedometer gear. Note how the gear overlaps the bearing journal.
The early model steel speedometer gear and spacer and the late model red plastic speedometer gear. The plastic gear works with all late model output shafts, fix and slip yoke.
This is what happens when you leave the spacer out. The bearing journal is wider than the bearing race. The extra width is taken up by the medal speedometer gear and spacer combo. The yoke bottoms on the splines and won’t touch the bearing race.
Edit-- I've changed and uploaded some photos in my gallery. I didn't change the ULR for the changed photos for this thread, but on my computer, the new photos showed up. There should be seven photos.