Inside glass window pane on oven door cracked.

First tried to replace the glass and gasket without removing the oven door. Removed all screws and took the door apart. However, I found it was very hard to get the gasket to stay in place and put the glass window in place with the door frame still attached to the oven and upright. Decided to go ahead and lift the door off the hinges by removing the two final screws. Then the door could be layed flat on the floor and it was much easier to put in the insulation and glass pane.