I made a set of the real wheel jack stands from scrap wood as per the dimensions and pictures in the forum. They work great; they are sturdy and safe and you can easily set up your bike alone.
Health, age and other reasons considered, I recently sold my GZ250. The new owner had his own rack or jack that he said would work on the GZ, so he did not want them.
They are free for the asking. Local pickup would be better as they are quite heavy and may be expensive to ship.
John D
704-536-1906
priced2381@att.net