I reworked how the sprocket parts fit so inserting the bearing now locks the parts together, and added a positive stop to eliminate alignment issues.  It worked perfectly.

I also took a stab at the cover tape reel.  It uses the same tabs which lock the parts together once the bearing is inserted.

I was envisioning using the backwards stroke to pull the cover tape, and the release stroke to advance the tape (with a positive stop).  The logistics of where the ratchet arms need to be may change this and I'm still thinking about it.

The cover tape pull needs to be a longer throw for the ratchet as the reel diameter is smaller and I had planned to exceed the necessary pull by an additional 25%.  However, the ratchet driving it would be spring loaded so that once the loose tape is pulled, the spring then takes up the difference.  

Or so goes the plan..