Bought propane for three parts of outdoor kitchen at the Circle K(rap) at Bear Canyon and Tanque Verde her in Tucson. Ran out of main burner gas and moved to a spare tank. Valve was bad. Moved to the third tank. Valve was bad on that one too. Took both full tanks with bad valves back to Circle K(rap) to exchange for working tanks. Was told to talk to the manager next week. The minimum wage clerk wouldn't even entertain swapping the tanks or even looking at them. No sweat off his brow. We'll what the hell am I supposed to do with the $25.00 of London broil sitting uncooked on the grill. Not the type of business we need in this area. Respectfully, Pizzed off in Bear Canyon.