Just got off the phone with Spektrum. The Expo, or any programmed function, will carry over IF the DX-7 is set up as "normal" mode. It uses all its internal mixing, and only accepts stick inputs only. He explained it as having the slaves gimbals on the DX-7............all the electronic stuff still happens from the DX-7. If used in P-link, then all functions carry over from the slave radio, which in this case would have no expo................................