There are no secrets, only hard won experience. The
F3P Group over on RC Groups is a good place to do some research. I had to build about 5 of them before I could set up one competently. Slop free, precise setup is a huge deal. I second the Fancy Foam recommendation. They are shipping kits that can be assembled to competition spec. Not like the E-flight or other kits, these are the real deal.