RE: Sig Four Star 60 rounded wing tips
I have never noticed any flight changes from rounding the wing tips but I have only done it on clipped wings. All the clipping does is give the plane a better roll rate. The 4*s are an easy kit to do some bashing on. I have done a lot of different things to them and never noticed any bad changes. Last year I finally built one completely stock. It's just a very good design and nothing seems to bother it.