I have a spillover spa with two returns and 6 jets. The jets have eyeballs that have openings that are the same size as my regular pool returns. The two returns though have much narrower (what i would call a jet opening) and water comes out from them pretty forcefully, almost nothing from the jets, but the system isn’t programmed yet. I think this is backwards but don’t know. Foreman says it’s correct Appreciate any info.