Your comments strike me as strange. I have a friend who has 3 walkers and never has had a maintenance issue.
Like anything mechanical he does the maintenance like clock work to insure top performance.
I guess he just got the jewel of the bunch! He cuts approx 50 acres one week and close to 80 the next.
Veteran - United States Marine Corps
Member - American Legion, D.A.V., P.V.A.