I've got a 24" Graphtec cutter. The only problem I've ever had is it not tracking evenly on long pieces, but that will normally show up when I send the job and it feeds out the entire measured length before it begins to cut, allowing me to stop it (if I'm paying attention). Having the pinch rollers set too close to the edge tends to exacerbate this. I usually draw out a foot or so, carefully aligning the edge with the lines cast into the front panel to make sure it's square, drop the pinch rollers, then press enter.