No band adjustment. If it was you wouldn't have movement in Drive. Low and reverse use the same band and the intermediate band is applied for second gear.
This is suspect that a valve is stuck maybe midway causing both bands being applied at the same time.
Again these are just thoughts.Diagnostics over the internet are tough.
Got it. I appreciate the input. Just watched a TF2 install video also. After 2 days in the rocky, dirt doing the shifter, I’ll let this go until I get motivated for more of the same.