Is the frame exposed to uv/sunlight where the rust has bled through? If so, then you must know that the por 15 is sensitive to this and uv can cause it to degrade. That is why they recommend a topcoat. Just a thought. I had no problems with their stuff, but used the metal ready as well.
I read the part about the sheet....just don't know if that was enough to protect the surface w/o topcoat.
Hank
Last edited by Hankdogg; 12/19/2009 2:16 AM.
