Power Steering growl

power steering growls during a sharp low speed turn . mostly a left turn say across traffic , into a driveway etc.. only if I rush the turn does noise appear .
If I stop engine and restart the growl goes away .
I did the flush with turkey baster method . Local mechanic did a total flush .
any thoughts ?

 

That would put the most load on the pump... I'd say pulley but not sure why it would "growl". Belts look good, tight, straight?

 

checked all that .

it's more of a centrifugal motion like it is starving for fluid

 

Screen might be clogged in the res. You have to remove the res to clean it.