Oh! Yes! I had to reset everything to get it to quit chasing it's tail! Balance everything mechanical first, meaning make sure your shafts are all true, flybar is balanced and true, followed by blades and blade tracking. Once you have eliminated anything mechanical that could be causing issues with poor flight then onto electrical. First problem I had was gain issues, my tail was as twitchy as I am after a pot of coffee! On my heli I have the gain way down to get her smooth. Now for my rudder issues it took a combination of balancing the swash plate, adjusting servo rod length then finally adjusting the pot.
Now lets not forget lipos. One thing to add is that she will fly different with different lipos. I have 2 of the 850mah 15C DN's and two stock lipos. I set her up using the DN's and now when I fly the stock lipos she is a little off. The higher power of the DN lipos makes a noticeable difference. Set her up with your preferred lipo. There is enough of a difference going from the DN's to the stocks that I have to trim her a bit with the tx on the stocks. If you only have one type of lipos then this will not be an issue for you.
Shoot more questions if you need answers