Tank vent and overflow routing

[JBBenson]

Thanks for the answers to #1 and the "bonus question" - both regarding the tank.

 

I still have a T connecting two intake manifolds and leading back to where the emissions canister used to be - the plugged line in second picture. I am still looking for answers to 2-4. My intuition says to plug the fittings with vacuum caps. Are the fittings in the third picture needed for tuning or some other purpose - or should I just install solid plugs?

I bought my bike with no charcoal canister and the two manifold nipples connected with a short length of vacuum hose.

 

The V11 tuning is all about balance, so when connected, the two manifolds can huff and puff at each other and figure it out on their own....