Mission Planner Helicopter glitch

Hello all, my name is Rudy. I have used Pixhawk and Mission Planner for some time now, but I have just tried Mission Planner with a new Blade 330 heli. The project keeps suffering from GPS glitches even sitting on the bench, but especially if I just pick up the helicopter. But if I change firmware to plane the same Pixhawk mini does not have any issues. Just with the Heli firmware. I have tried standard as well, as beta versions, and I am running the latest version of Mission Planner 1.3.70. Any thoughts?
Also It appears as if I can go back and forth between Mission planner and QGroundcontrol with heli. Is that okay? Thanks for any help.