Hi Jason,
First of all, I apologize for the late reply. I was the trainer at your station, KSWB, and if I recall correctly, your station has a 4MLE Vision switcher.
When you build a two-MLE effect, you are building it so that when OverDrive recalls the effect in the template, it either uses MLE1 and MLE 3, or MLE 2 and MLE 3. So MLE 3 is your second MLE, and it's also the constant MLE. In this case, you will need a regular custom that is built specifically for MLE 3, so that if you were to run an effect, for example, it would only happen in MLE3.
As a quick reminder, please be sure to turn "Editor" off when you are building any effect or custom controls on the switcher, and make sure the upper MLEs (1, 2, and 3) are not re-entered anywhere on the other MLEs when recording relative custom controls.
Please let me know if you require more assistance. Thanks!
-Ian
#OverDrive