My GE Profile dishwasher died on Dec. 23rd last year and I had 16 people coming for Xmas dinner. So, I ran out the 24th and was fortunate to find a dishwasher actually in stock at Home Depot. It was far from what I would have chosen if the situation had been different. But, the thought of standing at the sink for hours on Xmas day made it an easier choice. I ended up with a BOL Maytag machine with the tower in the center. My GE used to get everything pretty much clean regardless of how hap hazard it was loaded. However, the Maytag is a different story. What I have found is if you can fit your larger items into the top rack it will allow the water to go up through the bottom and hit the dishes on top. Especially that crock pot liner that you have...I have the same one and it will fit in my top rack and comes clean everytime.
Hope this helps
Bill