Well after 77 years of building starting with Comet kit's peanut size and all most every other brand to 1/5 warbird's I don't remember any kit wood foam and composite that did not have a problem of some sort, but that is why we are called builders we innovate when needed. But I have to say it took about a dozen Comet kits before I figured out how to make them fly more the an arms length, but they sure did crash nice.

Cheers Bob T