So has anyone found a way to keep the roller from unscrewing itselt from the motor? If I tight it all the way then it binds on the motor holder causing the motor to jam because the motor holder appears to be too thick. Or maybe they drill the hole too deep in the roller causing the acrylic not to bottom down? I'm at a loss... One day and 1 of the bottom acrylic rods already snapped. Any help would be appreciated. As for the silencers, you have to take the upper section off, then remove the top 2 small acrylic rods, then you have to slide the silencers and rods back in together. Even doing it outside the sump is a challenge(but doable). A second set of hands should help.
UPDATE:
Right After posted this, I stuffed tiny rubber (3)washers into the acrylic rod and after that I was able to tighten it up without hitting the motor bracket and now appears to be working. Time will tell. If everything works as it should, I'll take back out and show you the installed silencers.