I agree there is something wrong with a component in your system. I bought a more flexible 5’ line from HF to attach at the end of my 50’ hose. I was having similar supply problems and it was the whip causing the issue. Not saying that is the issue but you’ll have to check all of the components supplying the gun too.
I also agree that borrowing/purchasing another gun would be my next step. With the price of paint these days, using a cheap gun may not be the best choice. I bought a Eastwood Contours 2 spray gun and have excellent results. It comes with 2 tip sizes, 1.3 and 1.7, and it’s on sale now. Here is a
link.
