Well I purchased the DFC link arms and swash for my gobby 380 just last week. It will be interesting to see how the new swash and direct links compare to the old system. I am tipping its going to be a worthy change for a two bladed setup.
The installation was not too painful, though it turned out to be more than what i expected.
To install, remove the head and change the ball links on the servo arms to the new ball links provided.
Remove the motor! Unfortunately this is required to access the screws on the swash guide plate.
Clip on the new linkages provided onto the servo horns. Probably best to make sure they linkages are all the same length, as they are adjustable.
Put on the new swash and linkage it to the servo arms. Note the ball links are pretty tight but fit well.
Put on the swash guide plate and re-attach the motor.
Take out the feather shaft and replace the blade grip arms with the new DFC blade grip arms. Don't forget the loctite. - reassemble and remove the old non-dfc linkages.
Attach the old ball link linkages to the new DFC links attached to the new blade grips.
Re assemble the head onto the shaft and then go through the normal setup procedure, except now you have the ability to also adjust the length of the swash to servo linkages. I will report back how effective the upgrade is.