I thought it also had 1.5 out--maybe I saw a custom model or something or just thought I saw 1.5". The rolling motion is supposed to simulate a gyre, which many people seem to like, but I, too, have never been satisfied with the motion they provide. Depending on the tank, there are too many spots that are deficient. My suggestion is to play with the positioning as much as possible until you are satisfied with it, not someone else. I won't even give you a positioning suggestion like some, because I don't believe the answer is that easy, straightforward, or generalized. You're just going to have to experiment with it. One other suggestion is to use spaflex tubing instead of PVC for any turns. That, if anything, should preserve more volume and pressure without some of the intricacies of using regular, rigid PVC.
Thanks again, guess I will need to have a bit more patience with this even though it has gotten a little thin. I did use quite a bit of the spa flex but going into the tank and a couple other areas it was just a bit to stiff and would not make a smaller arc. These are places where I decided to use 45's to create a 90. Maybe for now untill I get the 4way back I'll go ahead and run the 2 outer lines that go to the front of the tank with the pump and when I get the new one do more tweaking from there.