fixes bad opnp screenshots with wrong nozzle selected, clarifies poin…

…t about ring lights

docs/openpnp/calibration/2-connect-to-machine/index.md

@@ -68,6 +68,11 @@ Before connecting to the LumenPnP, you need to set which USB port to use for com
 
     ![](images/turn-on-led.png)
 
+    !!! note "Keep Ring Lights On"
+        Keep the ring lights on for the rest of calibration. All calibrations should be based on the lighting from the ring lights.
+
+        When running jobs, the ring lights will turn on automatically when homing, so it's not necessary to turn them on manually in normal operation.
+
 <!-- 
 !!! success "v3.1+ Speed Increase"
 

docs/openpnp/calibration/4-homing-fiducial/index.md

@@ -11,7 +11,9 @@ Now we can set up the datum board. The datum board is a reference point for ever
     ![Home the machine](images/Connect-and-home.png)
 
 !!! danger "If your machine does not move fully to the front left"
-    If your LumenPnP does not move all the way to the front left of the machine when you click the Home icon, it could mean that your sensorless homing values need to be adjusted. Instructions for tuning this setting are [here](/guides/tuning-sensorless/).
+    If your LumenPnP does not move all the way to the front left of the machine when you click the Home icon, it could mean that your sensorless homing values need to be adjusted.
+
+    Instructions for tuning this setting are [here](/guides/tuning-sensorless/).
 
 ## Setting Homing Fiducial Location