That has become a very beautiful restoration Sir! I think it's very appropriate that you didn't make the tires extra black, it's an "old" tractor after all.
Where did you get the screws and flush nuts? What were the sizes? Great idea on drilling out the axle and using a screw. Awesome work! I have done a couple restorations, and now have one to completely tear down like you did here. Nervous, but you give me ideas to do it well. Thanks!!