Hi, i think i have overtightened my cold water tap on my kitchen sink mixer tap, have to turn tap several times now before water comes out ,and likewise ,when turning flow off, water stops but there is some freeplay and i can turn tap several times more times before it stops turning, however there are no visible leaks anywhere, my question is annoying as this 'freeplay' is am i ok to ignore it? have no knowledge of plumbing and dont want to start messing with it and risk causing a real problem, and dont know any plumbers and dread getting ripped off by one who might spot my lack of knowledge?