How to Troubleshoot & Replace Whirlpool AP6009411 / WP4451722 Door Insulation

I broke the innermost glass (piece facing oven). This occurred after cleaning all 3 of the glass panels inside the door. I apparently got the fiberglass insulation wet, but not evenly wet. After reassembly, I ran the cleaning cycle and that is when it broke. So, I ordered a new replacement glass and new fiberglass insulation. Problem gone. Thanks 

I purchased the oven door inner glass and insulation. I had to purchase the insulation because the original insulation was dirty. AppliancePartsPros sent me the service manual for my oven door and that made all the difference in helping me put my oven door back together. I am happy and grateful that I was able to repair the door entirely on my own with help from AppliancePartsPros!