Please, I need some troubleshooting advice regarding my shower. I added 50% of H2O to my fresh water tank. Began checking my water pump operation prior to my weekend trip. All my faucets and toilet bowel and toilet sprayer work normally, however the shower has no pressure and is barely a trickle. I noticed that the water pump seems to sputter and my lights dim when I turn the shower on. I don't believe the pump is going bad because the bathroom sink and toilet when they're in use work great, the water pump doesn't make the same stutter sound. If anyone has had this happen to them or has a remedy to fix/repair it, please let me know, because I'm at a loss.