Successfully re-plumbed the entire pool equipment pad - pump, filter, heater and salt cell, including new unions and adding a bypass loop and valve for the heater - in one sitting, without a single misstep, in less than an hour. Was not expecting that. One problem - a slow, one drop/minute leak from water temp sensor. I'm sure a new o-ring will stop that (the original o-ring is 8 years old) but cannot locate a diagram or parts list for the o ring. Can someone point me in the right direction? Thanks!