I've got the RDS8000 and I have dual elevator support; the second elevator servo is controlled by ch 7 or 8 (don't remember which) so you need an 8ch RX I think. If you don't have the manual, you should be able to find it on hobbypeople.net
ORIGINAL: PopPhil
Can't find any info on running dual servos on elev controls with the rd8000 fm trans. do the elev servos both work with the elev trim when set up in mix channel? or is there a separate prog for setting dual elev servos?