OK. Well. Let me rephrase. Has anyone had non-toilet-bowl instability mainly characterized by vertical movements up and down of about 10 feet? At any height?
I've got a case of the altitude stability blues. Above 200 feet it works perfectly in GPS mode. Flies missions perfectly. Landing it is an adventure. It randomly changes altitude about 20 feet. I have to catch it to avoid a hard landing. I have calibrated everything. And I know these things...