Has any one else noticed that the rotary 45mm blades from Harbor Freight are not of the same quality they were when they first came to our attention? I had 5 pks I purchased in the fall and just opened one - well, 4 of them actually! That's 8 blades and every one simply creased the fabric! I tried 4 or 5 passes and do know that there are 2 to a pack. They used to be great, but not one of the 8 was usable! Darn! Back to Olfa for me!