I've recently bought a cannular semi-auto and I'm destroying cans as I'm trying to dial it in, not getting any closer to getting it to work... if anything, it's getting worse as I seem to be getting those tiny little gaps closer. So close, that the cans and lids can barely even fit now between the chuck and the rollers. Out of the box the gaps were massive and a test can seemed to work okay. I wish I'd taken a photo, because since trying to get all the gaps in to like 0.1mm and stuff, the cans are now having the tops cut off, getting stuck between the chuck and the roller, being chewed up etc. The instruction setup PDF is providing no help. Most of it I understand, but not all of it, so clearly there's something gone terribly wrong somewhere. The first cannular I received had a massive dent in the front, which I had to return. And now the replacement one is destroying cans. Just about ready to pack the whole thing in but not sure what to do about it. A thousand bucks for something I can't get to work. It seems a few people here have had initial problems but then sorted it out. But, I have no idea what's going wrong because as far as I can tell I've got it set up to the specs stated in the setup guide. Any help would be appreciated...