I am having a bad blade week!!! It seems like when one of my blades goes wonky they all do it. I have 8 dull #10's and 4 dull #7f's. They all did it at once. I grabbed one fresh out of the package (sharpened by Mink) and it was as dull as the rest. What is going on? Sometimes they will work a minute if I give them a heavy dose of Kool lube. The man at my regular sharpening service passed away so I've been sending my blades to MInk. Before he died I NEVER used kool lube, I just parked my blade and got a cool one. Now my blade will go through the fur for a second and bog down. Are there any good sharpeners out there? Please help if you know one, I have a busy salon and I am at a loss.