Notice that there are more tracking problems during the cooler, dryer months of the year?   Static electricity could be the culprit.  So much static electricity can build up that your cutter can actually stop working altogether.  Here's why:  Just roll out some vinyl and hold the back of your hand against the vinyl as it drags over the big roll from either the bed or the cutter.   Notice how the hair on your hand stands on end?  Well, the faster the cutter rolls the vinyl the more static electricity is generated.  What's more, during the cooler, dryer months of the year, conditions are ripe for the production of even more static electricity.

What can you do?  The best solution to correct this problem is to put a humidifier in the room where the cutter resides.  Or wipe the vinyl down with a static guard cloth or static guard spray.