Just like Teacher's Pet, the 3M Film on my Endeavor started showing mold, bubbles, and severe cracking at 7 years old. I was quoted $2500 to $3000 dollars to remove the 3M Film and repaint the front of the coach because I did not want the film back on my unit. I decide to try the heat gun and plastic scraper, didn't work. Then I tried the steamer and plastic scraper, didn't work. After talking with a paint and body repair guy, he suggested using a 3M Adhesive Eraser Wheel, Part No. 3612 from Advance Auto Parts. Cost around $45 dollars. He said to apply light pressure and let the wheel do all the work. It took me about ~40 hours worth of work but I did not damage the paint or clear coat. And the front of my Endeavor looks like it just rolled out of the paint booth.
Fitz