Oven broiler igniter glows but weak and doesn't open gas valve

Unplugged the stove and pulled it out from the wall. Took the metal shield off the back of stove held by 2 screws. Unplugged the Molex connector for the igniter. unscrewed the round metal shield covering the opening where the igniter wires run to the back of the stove. Removed the 2 screws that held igniter bracket to the burner. Next, I pulled the wires and Molex connector through the opening. Installed new igniter in the reverse order. Be very careful with new igniter as they are very fragile and can break easily.