I am about to start my first kit after building a couple of ARF's to get started. Other than following the instructions 1,2,3,4... is there any "watch out for" hints. In the two ARF's that I built (4*60 and US 60) I found a couple of points where I did something later in the instructions before the next step. For example, in the US 60, I moved the fuel tank back to just in front of the CG hoping to lessen the nose heaviness. Now I have gone back to where I left off in the instruction book. Any other things to watch out for?