We have been battling a skimmer leak since last year. With no help from the pool company,they are too busy. So I have done everything people have suggested on here with dye tests and it appears the leak is in the underground pipe. Pool had previously been neglected by prior owners, and I wonder if it wasn't properly winterized. We have had a plumber out and he said he will conservatively try to remove cement around skimmer and dig by hand to find leak. My question is, while I have this all torn apart would it be best to replace the skimmer box as it is probably pretty old. Would like to do once and do right. Thanks!!! How would I know what skimmer box to replace with are they pretty standard, is there somewhere I can look on my existing one. P.S. My pool was built in 1971.