Neither part adjustable?
Either move the QH hook up or the tiller link pin down?
I had to drill new top link holes in a rear blade frame and change a bolt through one on a 3pt disc but now all my attachments fit my QH (Speeco I think, with adjustable hook positions), box grader, disc-harrow, rear blade, tiller, rotary cutter, and log skidder frame are all easy and same fit up for the QH.