Speaker Positioning

So lots of potential solutions and even more information to fiddle with.   Anticipate a relo further form the back wall, may not be able to accommodate side wall optimization but it seems like always from walls is a constant.  
The sweet spot/toe in variable seems to lend itself to almost as much debate; do you adjust sweetness to a single location, or do you compromise to expand the geography? Another personal preference no doubt.

thanks again to everyone who took the time.

So the new setup is in place, and I decided to add ceramic cable risers for shats and gigs making a direct comparison all but impossible.  That said, preliminary results are promising. Just have to sample a broader spectrum of material. One thing is certain, the source material is further “exposed” as any weaknesses are more profound. Same on the quality side. :)

Thanks gents.   By “dynamic” I was referring to physical location determined by more than just a tape measure,  Sonic measurements are of little value IMO unless you know the corresponding measurements for your left/right ear.  Once again and as anticipated, the ears have it!
I do appreciate everyone’s responses. 

LOL T-Jockey! That is exactly what I am doing, somewhere between 1/8-1/5, tweeter height, etc. etc. etc.  all great free things to try!

I did purchase the cheap Bosch laser rangefinder.  If only I could find a good used mass spectrometer. 8)

Thanks everyone. Again, a lot of great tips and education. I now understand why the speaker closer to the side wall is louder!  Glad it isn’t the equipment.  
Purchased the Bosch laser . Am just waiting for new speaker stands because tweeter position currently too low. Decent subs (vintage Kinergetics stereo 2-10” sealed boxes per side) make the back wall disappearance not much of an issue as those jawns pulse! Planning to get further away from back wall and relooking at R-L distance. 
Will check back at completion anticipated before the bird lands Thursday.