Ah, that is another issue.

Cyclic gain will probably not help there.
This problem can be caused by:
- main shaft or feathering shaft is bent
- some servo is failing and starting to jump (usually elevator)
- subtrims were not configered precisely (less likely). When Subtrim (tuning) is active all servo arms should be in the middle, swashplate at ghe horizontal position and zero degree between main blades.

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Spirit System developer

Stripped it down and rolled main and feathering shafts on a mirror, both are straight. If anything is bent it is main grips or hub but that is unlikely.
Stripped the servo that was harder to move by hand than the others and inspected, cleaned and regreased the gears. It is moving a little more freely now.
Swash perfectly level with blades at 0 pitch, hovers stationary with no drift.

I lowered the main gain down to 45 and the wobbles got way worse so I raised it to 65 and will test again tomorrow.

Raising cyclic gain seemed to help with the wobbles and increasing revomix to solve a tail kick is causing more blowouts. I love the feel of this fbl controller but it works backwards than I would expect, lol.

When you increase collective pitch from center, where the tail slider is going (with revomix)? It should go closer to the boom.
If no, then there is a bigger issue in the settings.

Please check this.

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Spirit System developer

Installed a pair of Zeal 210 carbon blades and the wobble is gone. The tail kick is also nearly gone and tail hold is vastly improved. Now I just need to figure out how to wire up a Frsky rx that doesn't have a dedicated smartport but a 5 wire plug that includes power, ground, sport, sbus in, and sbus out.

Great news!
Thank you for the info.

I will send you PM regarding receiver.

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Spirit System developer