What do you have for vac? I oversized my mains all 1" and 2-4 taps per lateral with anticipation to run a wet/dry single line. My reds never run well but it's what i have. Would love to put vac on it someday was thinking diaphragm would help as half my trees are red maple swamp not much elevation 1% slope. Other half of my trees are atop 100 ft slope 700 ft mainline with great gravity