I have a new t6xa bought in Dec. I used the radio for the first time last weekend (Feb 1 ) It worked flawlessly. But today was a different story. I had 3 of my planes with me at my club,got them prepped and ready to fly, when I noticed a little flutter in a rudder just before I started the first plane. So I thought I better check it out. I collapsed the antenna and started to walk away, not more than 15' all the control surfaces started a violent glitching. At that time I pulled the antenna out and the glitching slowed but there was still some movement about every 5 seconds. I continued to walk further away and the glitching became violent again at 80'. I tried the other 2 planes but got the same result. When I got home I tried different crystal from my sky port radio, (same channel) that did not help.So I swapped the crystals back. Then I tried my skyport radio , I was able to walk 100' away with antenna down without a glitch. I checked the t6xa to make sure that it was set to ppm (it is). the antenna is tight , voltage is at 11.1 the only thing I've done to this radio is change from mode 2 to 1 , Is there anything Else i can check for????? Or is this one of those warranty things. Any ideas ? Thanks