I’m in the process of replacing the heating element in my fan-assisted oven and have removed two screws holding this in place. Where I expected to find the third screw the hole seems to be sealed off (no screw) and I cannot remove the element as it seems to be attached somehow to this part. I don’t want to force the issue and was wondering if anyone had come across this before. The oven, Neff, is about 25 years old and the heating element has disintegrated! Thanks.