Ok pictures taken & uploaded. Not the best quality but I was being blown around by the high winds we're having & the sun was in my eyes. LOL
Disk Harrow
It's a small angle iron frame type. The supports running from the top link to the rear were inside the top link post with a narrow spacer, we just moved them to the outside and added a wider spacer & longer bolt.
Rotary Cutter
Ours has the chain style support to the rear to let it float instead of the wobble link like yours but should be similar fix.
We moved the support from it's factory position up to the top link hole and then added a bushing & bolt thru the hole where the support went.
Spring Tine Cultivator (We always called it a Tiller)
Here's were welding started getting involved. This thing is pretty beefy (and it's kind of short which was lucky on the top link height)
Here the rear braces were inside the top link bars with a narrow spacer. It's hard to see in this picture but when we moved the braces to the outside of the supports the top edge canted outward. We don't have the tools/equipment to heat those braces enough to bend them back in alignment so we used a disk grinder to cut notches in the top link bars and these braces then used a large C clamp to pull them in flush and welded them.
Box Blade
This one I wasn't involved in as much as the others. Dad & I consulted at the start and had a couple phone calls along the way but He did all the work on this one.
Here again the braces to the rear were just too beefy to bend so he just welded them in place and removed the bolt & spacer so the top hook could pass thru.
It was a tight fit so he spread them out and put a wider spacer in. For a lightweight BB it will do as is but I may go back and bevel the bottom edges of the supports to guide the hook to center and narrow up the spacer a bit (after Dad & Mom head south for the winter and I have the shop to myself

).
(Apparently I caught a leaf going by on this one so my apologies for the blur in the corner)
On all of these we were lucky that the new top link pin heights fell close enough that the Top Hook on the QH would catch them all and we didn't have to drill any new holes for the mounting pins.
It's not the best nor prettiest solutions but we're "hobby farmers" doing mostly land maintenance on our place so it works for us. If this was our living or we were clearing new ground I might have done some things different / better.
Best of luck with your project & I hope this helped you out some.
Happy New Year