Hired someone. I watched a video how to replace the DW hose and it looked pretty involved so I thought I'd better hire an expert. Video showed someone disconnecting the water and electric and pulling the whole unit out of the cabinet. The repair guy managed to get underneath the unit and replace it without much trouble. He was done in 30 minutes.
Applilance Parts Pros was great. Was easy to find the part online, and it was reasonably priced and delivered in two days. I am happy how things turned out.