I had the same problem with my blade cp. I used the xtal from the reciever that came with the radio and swapped it for the xtal in the 4in1 and it didn't work.

called the lhs and the xtal in the reciever that comes with the radio is considered a "long" xtal. I picked up the short style xtal on the same channel and all was well.

futaba 7chp

This could be the problem you are seeing.