So, just a little update.
After working thru some troubleshooting thoughts, this is what I did.
Remove wet bay panel to access Black and Grey Tanks.
Ground out each sensor and watch monitor of response (Everything was showing good, all sensors showed correct levels)
Trace wires back to control panel behind drawers in wardrobe in bedroom. re-crimp all factory connections.
swapped sensor leads at control panel and systems followed wire.
Back out in wet bay, removed 1/3,2/3,and full sensors, cleaned and put back in. levels were responding a little better, but still not as they should.
Ordered new Horst Miracle probes, installed and tested.
Levels are now displaying correctly, ran 2 tanks of clean water thru black flush while monitoring from inside down the hole.
Would have not guessed i would have needed new sensors this quickly, but I guess they could have been sitting around in a bin for quite some time before being installed. The old sensors looked to be the Horst Miracle probes as well with the little teflon hood over the probes.
One thing to note as well, we have not run any solids down into the black tank, only liquids. (Been fortunate to be near very clean facilities, and hey why dirty yours when you can dirty someone else's.