make sure cutter is sharp and the plate with the holes is flat
As an addition to Sharp Cutter, and Sharp, flat grind plate, screw that plate cap down like it owes you money!
It IS a cutting process! If the stuff does not cut, it's usually because something is not sharp, flat, or tight enough. Fix all three circumstances, and it'll cut cleanly right off the warm carcass.
Chilling the meat makes a cleaner grind, as the meat does not get smeared around as easy. Esp., the fat.
For a not-commercial grade grinder, I like cutting mine into strips. They tend to self feed, rather than needing much of a push from the plunger.
For what it's worth, I don't much bother chasing down every bit of tendon or silver skin. It goes through the grinder just fine. When it's sharp and tight!
I do Cuts, Stew, and Grind bowls on my work surface. I will process in that order, but occasionally dump the grind bowl into a container in the freezer while processing.
Once the rest is cut and wrapped, the grind meat comes out and is run, divided up, and packed away. Then the counter gets cleaned up.