about 4 trips to hardware store in over a year to install shutoff to basement toilet have me no where. water coming in from metal pipe with a 3/8" male end. Currently there is a 3/8" compression to toilet flex pipe on it. (want to put shutoff on there so I can install wax ring to get toilet to stop leaking when used. main water shutoff doesn't stop water completely to toilet for some reason so need shutoff at toilet which should have anyways) Only solution HD gave me was a 3/8" compression to 1/2" end and a separate shut off valve piece. Thought that would work, but after a day of trying everything I could think of, could not connect it without it leaking in 1 or 2 places around where 1/2" female end is attached to shutoff. Any solutions I can do my self would be MUCH appreciated as I'm at my wits in with this thing!!