I am betting that humidity is the culprit and the reason why some people have had good luck painting right on the as blasted surface (without using Metal Ready).

Since you are in Texas (and it is humid) there was a higher level of moisture on the frame before the POR 15 was applied.

Just my 2 cents........

Last edited by Hot Rod John; 12/19/2009 3:06 PM.
In the Stovebolt Gallery ~~ "The Orange Crate" 1965 C10 SWB Step Side Build Thread

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