At the risk of losing overall pressure, has anyone tried adding some T-fittings so that each supply line feeds both sides of the wiper? Or connect both lines to one side of the wiper?
I think this is my problem. The fluid is coming out, but the stream is so weak that the top part of the windshield is not get any fluid. Looking at the slo-mo video of the wiper is interesting. I'll have to try the same thing on my car to see if my suspicion is true or not.