Leaking Door

I have a kitchenaid kds-16, its old but it works great. The lower door seal was leaking so i bought the replacement part 4172127. It a factory part made by whirlpool to fit several dishwashers. The seal doesn’t work the best but that nothing a little silicon caulk can’t fix. My big issue is the corners on the door. Im guessing this is where the tub spacers would come in but there was no original spacers on it and I dont see them fitting anywhere. Any ideas or help would be awesome. Thanks.