I have one word for you, Ultracoat. I am the last of the die hard Monokoters and I switched a few years back to Ultracoat and have never looked back. Monokote changed a few years back. Top Flite said that it did not, but something changed. It won't shrink tight and if it does it does not take long for it to all sag. My last attempt with Monokote was using the flats. I had the same problem that you are describing. All I had to do was look at it wrong and I had a hole. Ultracoat does not have the same color selection as Monokote, but I am extremly happy with it. Good Luck, Dave