Looking for a little guidance since I'm trying to teach myself to be more mechanically savvy with this motor. I took it all apart and cleaned and fixed everything and it was running great for a week or so. Now when I start it the pee stream is nice and strong like normal but stops completely after 5-10 seconds. I have it in a drum of water so I can't see if it's leaking from the bottom of the lower unit but not sure where to start or what to look for. Any suggestions or anyone have this happen before?