Michael M San Diego , CA August 07, 2015 Appliance: KitchenAid Gas Cooktop KGCS105GAL1 Kitchenaid Cooktop Kgcs105gal1: Shorted igniter switch and one missing ignitor shaft seal. How to replace Shaft Seal. I replaced the igniter harness and the missing igniter shaft seal with parts from appliancepartspros.com Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes