Help Please...my Maytag dishwasher's soap dispenser won't open during the wash cycle. I was thinking I might need to order a wax motor, but before doing so, thought I'd post a question to make sure. Additionally, prior to the soap dispenser door not opening, it doesn't appear that my rinse aid was being dispensed very well...if that might be a clue. My husband will fix this for me, but I want to make sure to order the correct parts. Thanks in advance for any and all help.