Tyler we really need information to give advice.
What paint are you using. Acrylic, Enamel & manufacturer ?
Also the type of brush which will make it easier for a person using this type to advise. Cup or bottle feed ?
Did you thin the paint ?
When you attempt to use the brush can you feel air coming out of the nozzle end. IE is the compressor & air working correctly.
After every session my brush is dismantled & cleaned. Main areas the nozzle & you need a reamer to clean that thorougly. Brushes to clean through the needle channel housing. Clean out junk from the cup to the nozzle. Any junk left in here will block the nozzle.
At the end of cleaning & after putting back together spray a cup of
airbrush cleaner through the system.
Sorry to sound so headmasterish !
Also go whole heartedly with Barry get Flory.
Laurie