i'm having the EXACT same problem with mine, blade depth, pressure, offset doesn't makea difference, tried different blades, different vinyls, nothing really helps, i'm thinking these are just poorly made/designed cutters, some have defects, and im thinking to just buy a used roland gx-24 which are known to last at least 10 years, for almost what i spent on this thing, i've had the cutter for like 6 months, and just dealt with it, i made a mistake buying a no name cutter.