Pressure washer runs with choke on but stalls when choke off

I bought a used pressure washer that had a host of issues and I think I'm close to getting it running right. Here's what's been done so far.

Cleared blockage in Nozzle, cleaned carb (2x), replaced spark plug, fuel cap cleaned, air filter good, fuel lines and filter clear, replaced unloader, had to cut the inlet connector off as it was corroded to the hose and replaced, checked for intake leaks and all looks good.

Im still having an issue where with the choke on, I can hear the engine cycling. The water pressure builds and I can see the unloader move and unload pressure. When pulling the trigger with choke on, constant, albeit lower pressure and cycling stops. When put into run, the engine surges, backfires, and/or stalls out completely. Im not sure what else I can check other than replacing the carburator all together or replacing check valves in the pump. Maybe the unloader isn't set right? Hopefully this is repairable and I can get it running at 100% with your help