RE: Monokote....Never Again
I have used Monokote since it's introduction and have encountered very few problems. Occasionally a color doesn't shrink well (especially metallics) but I put it on pulled tight before shrinking. I have gone back to using a large flat iron to do the shrinking as a heat gun tends to soften the adhesive at the joints or seams causing it to pull and develop wrinkles. I believe this is what causes most problems fellows have.
When you look at the beautiful factory monokote covering jobs on Great Planes/Tower ARFs it is obvious the product is still very good. I have seen photos from some of the factories and the covering people are using large flat irons. That prompted me to go back to the large iron like we used way back when.
Ultracote is a good, easy to use film but it does not have the strength nor durability of Monokote.