replaced pressure reducing valve and set pressure to 65psi. old valve was fluctuating pressure. tested multiple fixtures at once and all ran well at the same time. rebuild toilet in the downstairs powder. replaced the flush valve, fill valve, supply line, flapper, tank to bowl gasket and bolts. set tank water level to proper height. tested multiple times with no leaks. looked at the other three toilets upstairs. the master toilet is in great shape. keep an eye on the other two toilets. the bolts are starting to show signs of age but are not leaking at this time.