The flagstone coping and exterior tiles have started coming off of our 12' spa/spool. The flagstone coping has been eroding away and probably should all be replaced instead of just replacing these pieces that have fallen off. Any recommendations of companies in the OKC area that do this kind of work? Or ones we should stay away from? The spa/spool came with our house, we did not build it, so we are not familiar with any of the pool builders in the area. Any recommendations on coping materials? It's a saltwater spa/spool. Should we stay away from stone since we've already seen issues with it flaking off, or is this just an indication the previous owner didn't have it sealed? Thanks!