Power Steer Pressure Issue

Thanks to all of you. I will take all the info on board & suss it out. I did have a cooler in the system which i recently took out as it wont really be needed. Im hoping as the cooler was so close to the same level as the reservoir that it had an air pocket in it. Hopefully the system settles down by itself. Otherwise il try the seal first & then the GM pump if all else fails. I must say that the wagon is a weapon on the street already & its not even tuned. Going to be one happy customer. Wish it was mine!