Greg,
I think flaring is a product of this design. I get them all the time with the RC
See here
And here
The stuff that can be avoided is like in
this link.
I have seen flaring in other prominent RC owners images. Peter Ward has an image of the horse head that has a huge flare through it. He owns an RCOS, hence why I see this as design related issue. I suspect the CDK will have similar issues.