Hello! I work with Graphtec FC8600-160 for about one year. The problem is- Cutter use less pressure on very left side of cutting job. I use 53 inches- 137 cm. It's very thick over laminated material. I use special cutting knife for thick materials and it works pretty well, but I can not calibrate right pressure to cut all wok good. If the Right side is very ok, then left side is less ok, and opposite... May be some of had the same issue with other cutters or directly with FC8600-160?! Thanks!