The Calmatos and Kyoshos seem to have a reputation for losing their coverings.

I've only assembled a few. Since they've all flown so good and so long, I haven't needed to do more. And I haven't seen any problems with the covering coming loose. Until the last couple of weeks.

My P40, the buddies high-wing, and my low-wing Calmato all got the same treatment. It what I do with every ARF no matter what. First step on all the parts as they come out of the box is to iron 'em. No matter what they look like, wrinkled or smooth, I iron 'em. I got tired of the ARFs that look smooth out of the box wrinkling in the sun during the first outings. It's harder to iron stabs and fins and fuselages when they're all together. And I've yet to iron even the smooth parts and not have bubbles and wrinkles show up. If they don't, kewl. When they do, they're gone.

Recently, my Calmato's trim has started lifting at a few corners. It's seen maybe 45-50 outings since last September with probably more than two flights each outing, so I got no problem giving the little girl some maintenance time. She's worked pretty good for me.