We have here in the Service Center some HS65MG's and one of the R6008HS receivers. These work fine for us.
Please see the large gray area on your instruction sheet that came with your R6008HS, it is the second paragrahp and it reads:
Using condition on "High Speed mode"
Caution! Outputs from 1ch to 6ch accept the digital servos only or most stype of peripherals.
http://manuals.hobbico.com/fut/r6008...4hs-manual.pdf
When using analog servos, you must have the R6008HS in Non-Digital mode.
Sincerely,
Krysta
Product Development & Support Specialist
Futaba Service Center USA
[email protected]
(edit for typo)