rkcruit, I use Koverall alot as well as silk & silkspan. Going around corners is basically pretty much the same with all of them. First off if i watched your video correctly, it looks like you attached the covering to both the leading and trailing edges allready, and still have a tremendous amount of slack in the covering. I try and leave a few inches of material hang over the both the front and rear edges to pull the covering as tight as possible as i work towards the wing tip. It also helps to cut slits in the material on the edge of the curved wing tips. The covering can then be pulled tightly as needed in those areas only to pull the covering tight. ( i use a monokote iron to get the dope( or stix-it) to hold the edges down as i pull the covering tightly.) I have done several build threads here and on other sites but can only come up with this picture of what i'm talking about where i used silkspan. (same process).....Gene