After a little reading in the Buckeye FAQ, it appears my pressure is currently in the expected zone. My filters need to be replaced as my house pressure is closer to 80 than 60 psi, so I've ordered new sediment and carbon filters. However, even when the current filter cartridges were new the unit wouldn't shut off in this house. Can the 3.5 gal storage tank go bad in some way? Could the refrigerator be causing some sort of pressure issue that prevents the unit from shutting off?