I had two XF-130s so syncing wasn't possible. I'm more against the design. The concept is great, but the build quality and customer service were utter garbage. Any mode that wasn't constant, or below 75%, broke rotors. I bought 3 sets before being told by coralvue that the only solution is to buy the ruggedized upgrade. Not to mention disassembly and reassembly are very easy to mess up and lose small pieces. The whole thing was just a headache.
Why make a product with functions that destroy itself? lol
Keep in mind my experience is just one person's and there is probably someone with a similar issue with vortechs...
