Dual Air Gap for Double Drawer or Two Separate Dishwashers with Skirted Cap and Extra Long Thread for Thick or Thin Countertops (AG200-004, AG200-001, T52, AMERIGAP)

OK, here's my update for anyone with the same issue. The cap design of this incredibly overpriced airgap fixed the issue. I have learned that some reverse osmosis systems dump waste water at household pressure, so there are high flow airgaps designed for these systems. I think if I was going to do it again I would have purchased the single input version for less money and kept my dishwasher on its own gap.