Old Cement Mixer with Briggs engine help please

[Steve2018 3]

Hi, got a old Cement mixer here that I need help with. It starts and idles fine but almost cuts out when load is added to it (sand etc) 

 

Took the filter housing off and can't see any governor springs attached which I'm guessing is the issue??

 

Engine code seems to be 92232 0141 01 970228f a

 

Pic of the carb but as you can see it doesn't have one of thenspring mounts it's like it was never threaded at the factory? 

 

Carb on left is a image I found online carb on right is mine

 

Any ideas on where the springs should go? 

 

Thanks