I had the same problem with my P-51. I used the heat gun and then followed it up immediately with a soft cloth to push the covering down just in case it popped up (it didn't) . It's about 500 % faster than using the iron. I did the whole plane in about 15 minutes, and it had a fair amount of wrinkles. It would've taken me hours with the iron. Also, if you use the heat gun, those horrible manufacturer decals can be removed easily at the same time. It seems liek there's a million of 'em on that plane [&o]. The glue comes right off with acetone [8D].