Deficiency

I believe either 2nd or 3rd week in flower, 5 gal pots. I am kind of at the stage where I do not know they look healthy but the issue is ascending faster and faster and it seems since flushing it has only really gotten worse.

Your call on transplant man, I don't want to say yes and they get worse.
Likely won't see an improvement for a while whichever you choose to do.

I'm hesitant to suggest it 3 weeks into flower. It's your garden though, what do you think is your best call?

Maybe get some other peoples input first.

Just my 2c.
I just skimmed so I may have missed something.

roots organic 707, cut with 50% perlite, and I use megacrop, PK boosters, and cal mag, PH going in is around 6.2.

What PK boosters?

I think the TDS meter is vital to know what strength your feeding at to be able to diagnose what's going on.
https://www.growweedeasy.com/ppm

The only time I transplanted at 3 weeks into flower in my case the roots did not expand into the rest of the medium.

Good Luck!

Megacrops pk booster. I only use the pk boost at 1/4th strength per gallon.