I get hot water from kitchen sink tap and from bath tub tap but only warm water from sink taps in both bathrooms.If I turn on the bath tub tap the warm water at sink taps will get hot but only if I turn on the bath tub hot water tap.The only change that I made was to move the water heater from the utility room to the garage which added about 25 feet of piping.It is a slab house and the added water pipe is in the attic.