i am having the same problem but slightly different with my 380. Wheels turn very slowly, jets weak, tail scribber limp. I cleaned the pool filter, checked the filter to the polaris, checked water flow to the cleaner, all as far as I can tell ok.The polaris used to work lazily when the pump was off just drifting on bleed water, no more though. Do I need to take this thing apart? What are the most probable causes?

Rick