HERE'S A LITTLE TIP FOR YOU DC2 OWNERS..IF YOURS STILL HAS THE ORIGINAL COG WITH NO CRACK IN IT. GET A HAIR DRYER AND APPLY SOME HEAT AROUND THE COG. NOT HIGH HEAT JUST WARM.FOR ABOUT 10 SECONDS IN A CIRCULAR MOTION.. THIS WILL RELIEVE 
THE STRESS OUT OF THE PLASTIC AND STOP IT FROM CRACKING. I DONE IT WITH THIS ONE I BOUGHT 8 YEARS AGO AND THE COG IS STILL PERFECT
THE STRESS OUT OF THE PLASTIC AND STOP IT FROM CRACKING. I DONE IT WITH THIS ONE I BOUGHT 8 YEARS AGO AND THE COG IS STILL PERFECT