FIRST OF ALL, IF YOUR BLADE JUST STOPS CUTTING, CHECK THE TWO SCREWS ON THE BLADE,  MAKE SURE THE SCREWS ARE SUPER TIGHT, THE SCREWS ARE WHAT KEEPS THE SPRING TIGHT, IF THE SCREWS ARE LOOSE THE BLADES WONT CUT, 

SECOND, TRY A GOOD BLADE WASH, CLEAN THE BLADES , THEN LUBRICATE.

THIRD , PUT ON A NEW GUIDE, THE GUIDE IS THE PLASTIC PEICE THAT ATTACHES TO THE SPRING, THE GUIDES GET WORN OUT AND GUMMY, THIS WILL SLOW THE BLADES DOWN, TO  CHANGE THE GUIDE YOU WILL HAVE TO TAKE THE BLADE APART, WHEN YOU SEND THE BLADES OUT TO BE SHARPENED, ASK THE SHARPENER TO PUT ON NEW PLASTIC GUIDES, THEY ARE INEXPENSIVE, THE NEW GUIDES ARE HARD AND SMOOTH, YOUR BLADES WILL MOVE FASTER, NOT ALL BLADES HAVE THE PLASTIC GUIDE, IF YOUR BLADE DOES NOT, CLEAN THE SPRING, GET ALL THE GUMMY STUFF OFF, THEN OIL.

AFTER YOU HAVE YOUR BLADE SHARPENED AND IT DOESN'T CUT THAT WELL, WITH THE BLADE ON THE CLIPPER, RUN THE CLIPPER THROUGH SOME TEST FUR, SOMETIMES AFTER SHARPENING A BLADE, THE SHARPENER COULD HAVE LEFT A FEW METAL BURS ON THE BLADE, RUNNING THE CLIPPER THROUGH THE TEST FUR WILL SOMETIMES SNAG THE BURS AND CUT THEM OFF. IF THE BLADES ARE RUNNING SLUGGISH, TRY THE NEW GUIDES,WASH, THEN OIL,

MANY SHARPENERS OUT THERE USE MAGNETS TO HOLD THE BLADES DURING SHARPENING, THIS MAGNETIZES THE BLADE, THE SHARPENER SHOULD DEMAGNETIZE AFTER SHARPENING, THEY MAY HAVE MISSED ONE. YOU CAN PUT A METAL PAPER CLIP OR ANOTHER SMALL STEEL OBJECT TO THE BLADES TO SEE IF IT STICKS, IF IT STICKS, MORE THAN LIKELY THAT IS WHY YOUR BLADES ARE SLUGGISH, THE BLADES BECOME MAGNETS AND STICK TOGETHER, TO DEMAGNETIZE THE BLADES YOU NEED A DEMAGNETIZER, BUT AT LEAST YOU WILL KNOW WHAT THE PROBLEM IS, AND YOU WONT WASTE ANY MORE TIME TRYING TO FIX THE BLADE.

HOPE THIS HELPED YOU OUT