Shape tweening...any "tricks"

So i’m doing some basic tweening, but as we all know flash sometimes has issues with it(the shapes do weird distortions, etc.)

So i’m just curious as to if there is a “fix” for this or if i just have to deal with it. It would be nice if i could skew movieclips, but i don’t think that is possible(without AS anyway).

I’m trying to make simple shapes fold, or skew into shape. Any pointers on this one?