Awesome! Thanks for taking the time to post pictures!
I was considering going with the 2 bearing arrangement, but I think the simplicity of the design is offset by more difficult and precise setups being required.
It looks like it would be very easy to replicate that seal which is good! I can create a similar seal in 2 places with my current design with very little effort, which works out nicely.
I'll update the draft design tomorrow and post some new drawings!
Thanks again to everyone for all the input! I'm very excited for this thing to become a reality!