POR 15 issues Need Help

[6600DURAMAX]

Doing frame off on the K5 - everything besides the axles is getting powdercoated - didn't want to do the axle because I didn't want to pull the gear set out ( have no clue how to reset up).

Anyhow - full axle tear down so decided to paint with POR 15 - cleaned everything with their degreaser/clean - then metal prepped

coated first coat with POR 15 rust preventer then went over that with the high build primer

Issue - today went to put their TOP COAT on but its so thick - consistency was between a tar and a thick latex paint. Couldnt get the paint to lay flat and not have runs in it. Looked horrible so used Acetone to remove what I could.

Then tried to thin it with Xylene - that thinned it but then it wouldnt cover and still had tons of runs in it.

At this point I want to throw that stuff away and go a different route on the top coat

WAHT CAN I DO ....

thanks guys