The last dishwasher I installed, over 9 years ago drove me nuts. I was ready to throw the damn thing out into the street. It had one leg in the back that you were supposed to be able to adjust from the front. I couldn't get it to turn for love or money. I tried from the back, from the front over and over. I finally had to forget about it and screw a board to the flooring to get the back to the right height. I also had a had time getting the water connection to stop leaking. Fortunately it was at the front. I just hope I can get it off when the time come.
It's a Samsung. While it's still working, it has never done a great job and has needed several repairs.