ORIGINAL: Flyboy76
I just bought a world models Ultimate .40 and the covering is great. It had a couple of wrinkles when i got it and the heat gun and iron pulled them out nicely. I have flown it about 15 times now and it still looks great all the trim has stayed sealed and the covering has no new wrinkles.
Geoff
The WM covering WILL break down with glow fuel exposure, and the trim will come up.
Make sure that you seal it with something... I used TopFlite clear coat on mine.
My WM Ultimate 40S is approaching 200 flights... the trim became problematic after about 30.