Was all set to go cut up a cherry that had fallen at my property when the delivery guy dropped off the Timberjigg I ordered. So I decided to put it together before I left. Anyway, get the darn thing together and one of the plastic rollers wont roll. after taking it all apart and double and triple checking I used the right bolts in the right places, I found on the roller that hangs up, the "spec nut M6x18" was just a little shorter than the other allowing it to get to tight and prevent it from rolling. And no, I didn't mix it up with "spec nut m6x14". Wasted a nice day on a paper weight..