I feel pretty strongly about putting a pressure gauge on a TV operated trans during initial install. Over the years of building, selling, and installing these units I've learned that a pressure gauge will save the builder and the customer a lot of grief.
Simply put, it's critical to the...
We have had very good luck building 4L80Es and retaining lockup using converters from a couple of different suppliers. Even on some smaller combo using turbos.
I meant to mention in my last post your D3 constant pressure, D4 TV is the ideal method. I haven't sat down to figure that one out, too much time in the 4L80, 400, and 4R70 studies.
I put the trick out there for free, so those who want it can use it. I also don't recommend it for daily driver usage typically but it's a good option on some of the harder hitting combos.
It works extremely well with the dual feed.
The band on in neutral is fine.
Yes it will release fine, you can increase the spring tension if you feel the need.
This is the same way a TCI and Hipster and many other transbrakes work for a TH400.
I'm not sure exactly what you have going with the modulator. Plug the pinhole. You should...
Teflon seals contain glass filler. The glass filler eats aluminum. They work great on an iron or steel surface. Think of factory applications, the 200-4R being one. They installed teflon seals in all the other locations but not on the aluminum center support.
On the center support location of...
4L80E center support rings work well BUT they create more wear on the aluminum 200-4R center support. Better for the drum, not so good on the center support. Iron rings work fine in this application. A 2-3 flare problem isn't caused by the type of ring here, unless you have wear on the direct drum.
Definitely check the TV cable.
What servo are you using?
The Art Carr kit wasn't a bad kit, so I don't think you'll see a huge difference between the AC and CK kit.
Chris and I have our differences of opinion but his 200 kit is as good as there is available on the market in one box.