Recentlbought a TT350N from you guys. Great little flash. BUT I’m trying to synch it to my X1N transmitter. I did watch the youtube by Molight owner but it’s not happening. Am following the these steps: 1. hit Slave button (screen turns red). 2 hold down Sync until radio signal flashes. 3. Hold test button on the X1 until they synch. Yet they don’t synch. Have tried various other things to no avail. What am I missing?