Yet another, free, all magnetic idea.

[gravityblock]

I think I have it narrowed down.

The tunnel will not work, it is only a partial solution.  When the rail magnet is approaching the ring magnet, the shield should be fully covering the rail magnet.  After the rail magnet is past the sticky spot, the shield needs to cover only half the magnet, and this will give the rail magnet a kick to the exit spot.  At the exit spot, right before the exit spot sticky point,  have the shield cover the opposite half of the rail magnet to free itself from the ring magnet.

We could use the tunnel at the exit spot to shield the other half, but I haven't figured out how to move it from the one half to the other half of the rail magnet inside the ring magnet without cost.  Maybe a small tunnel at the entry and exit points would work. 

We need a dynamic shielding of the rail magnet as it approaches, enters, and exit the ring magnet without cost (I think 2 of the 3 dynamic shielding positions, may already be workable). This is probably why Broli couldn't decide if the rail magnet needed to be shielded or not, since It needs to be shielded in a dynamic way.  I need to think about this more.   

[twospin]

I know where this could work but will only tell her or him.

[twospin]

Where is the problem of shielding away a magnetic field with a equal opposite (controlled) field at the right time controlled by the microsecond.
Magnets work like a bubble. Just like a kids party bubble blower he makes attraction where he wants to get the attraction in the needed shape for his need.
Magnetic and gravitational bubble shape.
Can we make a bubble spin if the surface tension changes and the molecules react and move with the rest? YES WE CAN. Is that changing molecular structure  or altering the magnetic's in a me way?
Sorry if you think my interpretation of what magnets and gravity can do is not to current science but even I can see things are wrong like a lot of you.