The adjustments available are very helpful and being able to install and adjust without tools is great. I have not tested the forks with more than 500 lbs but it seems fine. What I would like to see improved is the center support tube for the forks, when a pallet is used that center tube contacts the wooden cross members on the bottom of the pallet. This prevents the pallet from lying flat on the forks. The center support tube must be moved to the base of the forks, I dont know if this limits the strength or lifting capacity of the forks.