Whirlpool whac-5025gb water dispenser. I'm looking for a manual. At first it leaked; I replaced the hoses. Ran fine for about 3 yrs. Now leaking again. Hoses are good; Tightened gaskets in little holding tank and it SEEMS to work. My deceased baby sister gave it to wife and I. For sentimental reasons, we'd like to keep it in family. Gasket seems to be missing between where bottle sits into unit and panel missing on front. Any help would be appreciated. Thanks in advance.