I'm in the middle of my sacc rest right now on a 10gal batch of red ale. Last night while I was crushing the grain I got through about a pound before I noticed that the steel pin had worked itself out of the bearing opposite the crank and the rollers were pretty far apart on that side. Grain was getting through uncrushed. I should have run that grain through again but I didn't. I'd estimate .5 to 1 lb of grain got through uncrushed...we'll see how my efficiency fares. It shouldn't be too bad. It'll still be beer.