One of the great things about this hobby is that there are as many different opinions as there are airplanes. Most ARF's will fly fine if built exactly as said in the manuel, most of us don't do that. We tend to take the original plane and over-power, over-control,and exceed the designed flight charistics of the planes. There is nothing wrong with this, its part of the hobby. you will also find that there is some quality inconsistancy with most manufactures, one might be perfect the next not so. What you really need to do here is read the posts that apply to your plane and use the problems as check-points just to make sure your plane wasn't built on a friday afternoon after a liquid lunch.