I recently tested the plumbing on my bathtub install and notice that the flow out of the tub spout is not very smooth.. actually it's really rough. I notice that some tub spouts have a grid at the opening of the spout which I assume causes the flow to be more smooth. I'm wondering if the spout I bought was supposed to have a grid in the end??? The tub/shower unit is a Price Pfister Triviso model. Any thoughts?