I am buying a home in Bergen county ,NJ and the house was built in 1965 and the pool a inground vinyl liner was added sometime after thr home was built.So I was told by the now owner.She had a new liner installed with new water last year and a nice new winter cover.Will there be other issues I should look for being this pool is very old? I do not know the construction of this pool or if they were built different back then.Is this a pandoras box and I should run fast or move forward?