Nozzle gets closer to the bed every time during first layer (worse at higher temps).

I'm hoping somebody has had this issue before. I've ran through as many calibrations as I can find and just recently found the one here:

https://github.com/HelgeKeck/RatOS/blob/documentation_v2.1/site/docs/configuration/beacon_contact.md#6-first-print-and-fine-tuning

Everything works, even my beacon comes back with a 1 for the latency.

After the calibrations I'll print a large first layer - probably around 200x100mm
It'll start out PERFECT and about half way through the nozzle starts moving closer to the bed and I can see the lines start squishing out, if I adjust the z up to compensate (0.025 at a time it will adjust and keep printing good) - this is the fine tuning part further down on the page.
That's all find and dandy and the print will keep going nicely.

The issue then is the next print I do. The beginning of the first layer (which was perfect before at the beginning) is now too high because I saved the final z adjustment from before.
Today I used the "save_z_offset" command in the console and it supposedly adjusted the thermal setting, but after a couple more prints consistently back to back (just incase the bed wasn't heat soaked enough) and I still got the same consistent z height issues. Either too high at the beginning, or good at the beginning and too low at the end of the first layer.

This is also happening on all 3 of my ratrig 3.1 with beacons. I've ran non-ratos versions of klipper and the newest ratos with all the updates - doesn't seem to make a difference, different nozzles (E3D and Phaetus). Right now I'm putting an old pinda on one of the setups to see if it has the same issue ( I don't remember having this before I got my beacon sensors ).

Any ideas?? I'm at a loss and I can't babysit each of these machines through their first layer all the time - I shouldn't have to.
GitHub
The preconfigured Raspberry Pi image that makes it easy to run Klipper + Moonraker + Mainsail on your printer. - HelgeKeck/RatOS
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