I have a Frigidaire Dishwasher FDB1050, There is water leaking from where the heater elements pass through the encasement on the bottom of the unit. Are there seals needed for this. I tried to tighten them, but it seems like the threaded fittings on the outside are stripped. This unit is relatively new, I had it for a few years, but only lately did I operate it, and I then I saw water leaking into the basement. Oh fun!