Yes... Yes it is. That, and the process.
I am really not following that. I wrote before that all the other paints are also a generic enamel and they have been working just fine. My question was why this one was not. Again - The others are not the purpose specific ones you list, yet seem to be working just fine. Will they last 25 years. No. Likely not. That's really not my concern. If they're still here in 25 years we can reevaluate then and adjust fire if necessary. This is a working recondition. Not a restoration. Maybe I am missing the point. Won't be the first time. Won't be the last.
Point is that I am lazier than you are. A GREAT DEAL lazier. "Generic?" Read "Porch paint".
I can't be bothered to mess with re-formulating paint when I can buy a paint for another few bucks a gallon that goes on right first time, every time, for a given task.
Example: Early-on I said Valspar for walls and Behr for ceilings. Behr is actually the lesser-rated paint. But their 'ceiling white' does a better and
easier job for me than the Valspar.
Steel fire doors here don't get Benjamin-Moore. They get Rustoleum white hammertone. Goes on easier, tolerates lower-grade pre-prep, and lasts longer for THAT job. The fencing got 'Olympic Stain'.
Lazy about d*****g around with paint because research to ID a 'lazy man's paint' that needs low/no messing about with for any given task is cheap and well worth the avoided hassle.
I ain't MARRIED to any of 'em.
Your S-W 'loyalty' has cost you a good deal of time and annoyance, has it not?
Not a paint problem. Yer just too hard-headed to give up, put that S-W aside for some other job, and buy something more appropriate right outta the can.
That ends up... cheaper.
Just quote me a shop-rate for buying-back
yesterday, once it has been wasted.
Bill