The concrete block / jackstands were kind of misleading.
It appears they are the 'primary' source of support.
Actually the chainhoist was the main support, I just added the blocks as a safety measure.
Dad said I didn't need to blocks at all,.. but I figured better safe than sorry.
Thanks for the props about the site.
The project has been a labor of love so far. I am anxious to get it finished.