Hi, Kenny. As you know I've taken great interest in your troubles since Lanes were first implemented in X2 and have been happy to see the the new way is helping you get back to a productive place.
One thing I will recommend and this is exactly what I did this afternoon is dissect the Getting Started video step by step. When I first viewed it I thought it was more of a general overview of the feature but despite its brevity it is CRAMMED with info if you stop after every tiny little blurb and absorb what is being said. I know you have watched it but it seems some questions and struggles you still have may indeed be answered within that vid. It moves very quickly and I had to write down a bunch of stuff to fully grasp it.
However it may not solve all your issues but I think the key is that you need to know when to open preferences, how grouped clips are sorted and above that know the keybindings, hotspots (and how to disable them when needed), navigate and promote takes (there are multiple ways), etc...
I was going to mention how well even the video tut was done but kind of forgot. It seems simplistic and I totally spaced on it the MANY times I had watched it previous but there are literally a couple dozen super important things covered in it. They just happen really quickly so it's easy to miss something.
If that is not the case then my apologies but seriously if you haven't ripped that vid apart on a second by second basis it's probably worth another look.
http://www.youtube.com/watch?v=TPi1BkBhEvE And I know I've said this to you before and you get it but others may not so I'll say it again.
There is a serious conceptual difference with this method as opposed to the X2 and perhaps X1 way of doing things. Instead of using the mute tool to slice out unwanted bits we are using the Comping Tool (which is indicated by a cursor change using the Smart Tool) to "isolate". So basically it works in reverse. We make what we want audible instead of making what we don't want inaudible.
Much quicker that way.
Cheers!