Soap Dispenser Problem with Kenmore Eli...

I have a Kenmore Elite Dishwashe, Model1378, had it for almost a month. The soap is always left in the dispenser. I read on the net to try the Cascade Gel Pacs, which I just did, and it appears to have worked. This dishwasher was #3 on Consumer Reports ratings, and I know they like this detergent specifically. My question is, it appears to me that the dispenser door doesn't open all the way because of the upper rack, and that's why you have to use this type of soap. Also, makes me think that's why CR didn't catch it. Have any of you heard about this? Thanks for your help. Also, its not my hot water, which is 120 degrees, and I run it before turning the washer on.