My first build with APM on a tricopter.

As soon as I raise to 50%+ throttle and it stats to get off the ground the tail servo starts to move 15 degrees left and right which causes the whole thing to shake like it's having epileptic seizure.

Spins very smooth up to ~50% throttle though.

I see this is quite common issue, but can't see a common solution?

1. I'm with analog servo, any chance switching to digital would help?

2. Any chance playing with PID will help shaking that violent? And how to actually play with it? (never done it before)

3. I'm with 3.2.1 since this seems to be the latest version APM planner installs by default.

I see there are different settings related to tricopter from 3.3 up, so do you think upgrading to that could help and how to force it to flash that version?

edit: OK I just read 3.3.x doesn't go with APM 2.x boards and since i'm with micro APM 2.x This is out of the options

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