I have a bosch SHU 3322UC/ 11 dishwasher it has been taking a very long time to wash a load of dishes . Regular wash has been about 3 to 4 hours. The other day I went to wash a load of dishes (normal cycle) and after 6 hours it was still washing. I pulled the washer out and took off the side panel and there was no kinked hoses or plugged drain, I don't know where else to look, your help would be greatly appreciated.