"What do you mean by oscillating with respect to your aircraft?
If you mean roll or pitch oscillations then try reducing the corresponding Proportional gains a bit to make it less sensitive at higher air speeds."
"I feel we all should be glad that there are a default set of parameters to work with. They were probably arrived at with a general consensus. If a second set were added, then some hobbyists may become unsure on which to choose."
"Adafruit sells a single cell(3.7v) LiPo solar charger with a load terminals, but they have been out of stock for at least a couple of months. RobotShop sells a similar product which is less than half the price and is in stock. I'm testing them now…"