When fixing my running toilet, I shut off water to toilet by turning shut off valve off. Now it doesn't turn back on! It turns fine, but no water is coming out to the toilet tank. I see the similar question answered a while ago (http://www.askmehelpdesk.com/plumbing/toilet-shut-off-valve-wont-turn-435930.html), but for the different configuration (mine looks like diagram 2). What to do? Thanks much.