I’m a terrible painter

I just did both engines. Wire brush and clean with acetone then apply ospho to the bare metal then paint with the canvas white. I actually also add hardener to the paint was well.
So you’re using a brush since you’re adding the hardner?
 
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Can you add hardener if you have shrinkage?

Yep. Grind up one of these and add it to the paint.
 
I do brush it. The lines flow out nicely with the hardener.
 
It is probably what Frank said, as I believe those two cans, even though both are same manufacture, they are from two different product lines and are not compatible. Remove all traces , clean , repaint or powder coat.
 

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