Hello All, I am a homeowner desperately trying to get some feedback on what I am led to believe is a good plumbing configuration. I am currently preparing to plumb the hot/cold water supply for a deep, jetted tub. The tub has a water heater but obviously, the function of the heater is to maintain the heated water as heated from the hot water tank or tankless system. Based on the need to maintain the tub water temperature, I want to get the tub filled as fast as I can. I also want to get the most volume out of the shower head and handheld. I am setting up the American Standard Flash mixing valve (RU101SS) with the R433S three-way diverter valve. When looking at the pair of outlets (Tub Spout w/o diverter and Shower Head) provided in the mixing valve, the hole diameters allowing water to feed out from the mixing valve are each smaller than the supply hole feeding into the supply for the diverter valve. Based on the small holes in the mixing valve, I am inclined to join both of the water outputs from the mixing valve and feed the joined outputs into the supply for the diverter valve. My thoughts are that I will maximize the supply into the diverter vale and hence that will provide the optimum scenario for output from the tub spout, handheld and shower head. I was curious if anyone has plumbed the noted configuration and was it beneficial, or has there been flow problems resulting in the diverter valve that I am not thinking about? Thank you!