I have seen a lot of ideas concerning Cable lifters

@holmz  That was My intent. Sorry for not going into more detail. I was getting a little long in the tooth and didn't want to drag it out all the way. YES, You take your before and after images with Dirac and compare them. Dirac is VERY detailed and accurate. That is if you use THEIR microphone. I actually had different Groups for things like With and Without subs, and With and Without Center. That way I can tune my system to what I am listening to at any particular time. I always overengineer everything, but it ends up with ROCK-SOLID results.

@Holms
Like I say so often. I looked at your link about the car batteries on concrete and I saw a funny thing on the way to the market to buy some pickled pigs feet. Other that an unsubstantiated claim that it is OK to place a battery on concrete, there is NOTING on that page about it as to why one way or the other might be correct. And you bring back the statement about Alchemy. An Empty statement that says NOThING. All consumer glass does contain lead. The only difference between what is called leaded glass and that which isn't is the amount of lead used in the formulation. You actually ALMOST answered your own comment in the statement about the definition of Dielectric etc. I didn't claim that the lead makes a conductive path but that I DIDN"t know if it MIGHT have an effect on its properties. i.e Conductivity, Capacitance, Inductance...
One of the jobs I worked back in the day required me to get certified as a Master Mechanic. That was right before I went to USC to study Electronic Engineering.

Strange use of caps...

rebar chairs:

https://www.homedepot.com/p/Grip-Rite-2-1-4-in-Rebar-High-Chair-20-Piece-IHCP21420R/202090708

+1 @bdp24 

I missed you already having made this suggestion.