I'm running the low flow on a 75-3, my pin plates are sloppy as well, mine came from the factory with the grade zerks outside of the cases so you don't have to pull them to grease it. I will they would have done that to the one under the cover on the top. Only problem I've had is getting material wedges between the adjustable plate on the rear and the drum. Which is probably just a learning curve for me. I check the teeth for tightness every couple of hours and grease it once a day, I pumped it slam full with a tube of grease and it never stopped taking grease so I'm not sure exactly how much it needs, my topcat mower blew apart due to a lack of grease so I take that pretty serious after having to rebuild it with 20 minutes of run time. I'm looking at picking up some planer teeth from extreme wear parts to see if it would increases productivity or decrease the size of the mulch. Other than all that I'm very happy with it so far