tiger,

calm down a little bit....

Film type covering tends to do this. another cause is the balsa expanding and shrinking due to humidity/moisture in the air along with temp changes. I've used Coverite, Monokote and Ultracote and whole all three look good they all need reshrunk at times. Sometimes it only takes a couple of degree's to cause what you are saying, especially when the air is dry

If you think that is bad, try getting the Great Planes Super Stearmen and then spending 12 hours getting all of the wrinkles out just because I took all the pieces out of the bags. And that was Monokote. And guess what, I had to do it three more times in 2 weeks until the balsa finally finished changing. I still need to hit certain area's now and then and that includes all of my planes.

It's just part of the hobby and the type of covering

Fabric and dope will add a ton of weight so be careful there