When the bottom rack of you Dishlex becomes painful, it's probably because the wheels and/or stub axles are loose due to wear. I printed a full set of these in PLA, and they bottom draw rolls in and out much easier. Not sure how long they'll last with the heat and chemicals, but the geometry is good, may need to use a better material.
I printed with no supports, and the axle pointing up. Worked far better that I could have hoped.