Yesterday I opened the box to my brand spankin new corona knock-off and I must say, what a hunk of crap! I spend all day fixing Mercedes-Benz's, and come home to this? I've seen boat anchors built with more care! Anyway, after reading up on this thread I pulled the trigger and ordered one, 19.99 shipped!! (ebay). I got pretty much what I expected. In all seriousness, its not that bad for a cast iron tool. I had many of the same issues others have had with the plates not being calibrated/sloppy. I decided I wanted to use the center adjuster to change my grind, so I left the wingnuts on the sides alone. I took a little different route to solve the problem with the cotter pin. I decided to do away with the cotter pin/collar set up entirely and weld the outer plate directly to the auger(after squaring it up against the other plate of course, to ensure a smooth and uniform grind). My model also has three screws holding the other plate to the body, so i took them out and used a grinder to flatten the surfaces that meet up in order to square the fixed plate up, as well as removing the handle and replacing with a bolt to motorize with my drill and socket. I couldn't wait to get home and try it out! first handful, nice and uniform, but a bit coarse with uncrushed grains. Quarter turn on the center adjuster and voila! A beautiful, uniform grind! Husks still intact and each grain broken into a few bits, with a little flour on the bottom of the bowl. SO much nicer crush than my LHBS! I can't wait to get it mounted and run a few batches through to see how she performs. I was getting about 68% from the LHBS crushes, hope to improve on that. I'm so glad i found this thread! Thanks to all of you for sharing all of your tips and tricks! I can now buy in bulk, and I have cut my brewday bill literally in half (keeps SWMBO off my back!) between being able to use the corona, buy hops in bulk and next I'll be trying my hand at yeast washing! Again, thank you all! I love this site!