OK...the DX6 in detail. I've read that it has an inherient problem in the programming of the CCP (collective). I have had the problem twice except this time it took longer to figure out because it looked like a bad main motor or maybe pitch servo. I struggled with it for a couple days and figured it out today. With this problem...collective is sticky or will not engage correctly. My heli slammed it's self into the floor repeatedly and hopped around nearly uncontrollable (this is when it absolutely was at it's worse). It's a gradual thing that gets worse as the programming goes in the radio. I had re-set my bird many times to compensate but didn't realize it was happening. After watching the Pro slam it's self into the floor during hover, I decided to do a re-boot of the radio. I re-booted, re-entered all the parameters, and then re-bound with the RX. The results were amazing. From a fully closed throttle...I have ZERO pitch in my normal setup. After the re-boot/rebind I had about 5-7 degree neg pitch at closed throttle, so I had to set up the head all over again. Since...hands off hover. No training wheels...she's that stable. The first sign I dropped collective was that the pitch servo stripped it's self right out, and I changed it. Then the setup problems just snowballed on me from there till I finally realized I was dealing with a DX6 problem...not a heli problem. Horizon disavows anything is wrong with the DX6, but there is a problem with the CCP area of programming in this radio...I'm not the first to experience it. I'll be more apt to re-booting if I ever start seeing collective problems again. The radio is working fine...till it drops CCP. The all haties breaks loose. I will be calling Horizon to see if they've got a fix. I'm thinking the main processor has to be changed out to correct the problem.