They are pita customers because they want the grass cut at a given height?
Good point! My statement was confusing.
Eventually I purchased a 60" mower and used it everywhere I could. After that purchase, I only used the 36" mower for areas with gates, which became a pia for me, as I suspect it will for him.
I was nervous to drop the clients that required the 36" mower but once I did I was more efficient, had more energy and generally enjoyed my work week more.