Richard U Delmar , NY November 21, 2014 Infinite control sparking The replacement was easy, BUT my Spectra model required removal of the front crystal. This wasn't hard, but I found nothing about it on the internet or YouTube. Remove the four plastic nuts and then the crystal. Then it's easy. Read More... 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes Tools: Adjustable Wrench, Screwdrivers