Trying out new offset disc

Still too wet but couldn't wait to try out my new to me offset disc. Bush Hog 145 7' offset mid 1980's vintage. Works as good as a new one(now), Old JD 2030,1970's vintage, that I have weighted up to close to 10,000 pounds pulled it more than fine. I'm into the tractor and disc for $8600.00: about the cost of a new disc. Do like my old equipment.Oh, a new JD farm tractor (not utility tractor) with same HP and drawbar pull as the 2030 is "only" $62,000.00.........and I'm pretty sure that new one won't be pulling hard 50 years from now.