HS928 Bogging down under load

Hi folks,

I just picked up an HS928. It hasn't run in a year or more but I got it running after cleaning the carb without removing it. I cleaned the main jet and the pickup tube with carb cleaner then blew out with compressed air. It starts on first pull, idles nicely, and works great until under load when it bogs down. A soon as I let off the auger returns to normal. My next check is flow through the fuel line and the shut off valve. Anything else I'm missing?

https://preview.redd.it/v48mlo27x5kg1.jpg?width=2048&format=pjpg&auto=webp&s=029dcaa161d97d7eb5e6bf76d82855fdf1be9ba8