What type of paper are you using? I had this problem with weatherproof matte and it was because I had the force too high and so with was cutting way too deep for the paper type. Once I adjusted that settings it worked perfectly. Also, not all blade are the same and sometimes the settings that worked for the last blade are just not right for the new blade. Switching blades is super frustrating because of this. I would recommend just doing some test cuts with the new blades before trying to cut a sticker sheet.