I'll second j-d's warning about the too-narrow rungs. My Tiger's bunk ladder suffers from that malady, compounded by my having chronically painful feet. My solution was a pair a cheap rigid-sole slippers that are only worn in the RV. I wear them climbing and descending the ladder, stow them in a slot in the overcab bunk at night.
Jim, "I took an IQ test and the results were negative."