Hello, This is a common problem with older tub/shower units. They can however be repaired in place in just a few short hours ready to use the next day,if not that night. The cost of this is much cheaper than the replace cost. You can find a tub repairman in the phone book , plumbing supply houses or plumbers may be able to help you locate one in your area. You can check out glas-tech.com It has information and free tips on it, some are no brainers and some might surprise you. Good luck!