[Rodney Nelson]

I have a sandblaster cabinet. It is a harbor freight unit, and it just does not seem to work that well. It will start working ok in the beginning and then slowly it just stops working and it is hard to tell why. The media is not dirty. I'm wondering if it is my compressor. I'm hoping not because going out to get a new one just really is not an option. And mine is basically brand new. The cabinet seems to be in really good shape. I was originally using the harbor freight gun and it was not working so well so I got the eastwood upgrade kit with the foot pedal and new gun. But it did not seem to help and I was thinking that the nozzle was too big and the eastwood gun did not offer different sizes so I went back to the harbor freight gun. And I'm using a 4 mm nozzle.

I am a little low on the grit, does the hopper need to be filled to the max or is it ok if it is low? It is not empty and the intake tube is covered with media but just on the low end.

What about a regulator, should I be using one?

What about high flow fittings?

Below are some pics and specs on my compressor. Any suggestions?