Hey pilet.
I feal your pain. I have the spectrum DX-7 system and have the same problem with dual elevators. I've tried p-mix 5 & 6, following the instructions to the letter. I can get the endpoints close(nowhere near perfect) but the speed is WAY off. Let me know how the match box works and if so what your tx settings end up being. Yeah, I'm a bit nervous every time I go flying with the Spektrum. I've been reading about the issues as well. There are about 8 guys at our field using it and so far no issues. All of my rx packs are at least 6v, 2000 mils so we'll see
. Every once in a while(about 1 in 10) when I switch on the plane with the tx already on I get nothing. turn both off, then back on and it's fine. My mind set is this: If I lose a plane to a failure I can definately balme on the radio I'll switch back to crystals. There was a thread for some time on this issue and the moderator, a J.R. employee(no names) locked it. That is when I really got nervous[
].
Anyway, please let me know how you make out on your set up.
Thanks,
Rod