sand blast cabinet update help please

What actual problem are you having.

I have the $250 HF cabinet with a fairly cheap gun upgrade only.

The only "problem" I ever have is a clogging of the feed line which I fix by pulling the gun off, and firing it back down the tube.

What CFM compressor are you using?

My tip is metal and showing wear bit it's been on there for years.

Sifted playgroud sand @ 95 PSI