I recently bought a two holed mixer tap for my kitchen sink and tried to fit it myself.... i removed the old ones, then the new ones were slightly too long so i sawed the ends off and fitted them. Now when i turn the tap on the water leaks from the join at the top. I have bought a file and some new washers and ptfe tape and plumbers putty. will any of this help or am i going to have to call a plumber? oh and i undid the compression valve at the bottom and i think that leaks a bit too.... please can anyone help me ?