It's possible/likely that I'll be heckled for this, but I saw the price of the "pan clamps" a few years ago, and recoiled in horror.
I made a perfectly safe and usable alternative to retain the pans over the flame out of a metal coat hanger, bent suitably to fit the metal work.
It's worked without a problem for 6-8 years on my Origo 6000, where I use it every day when sailing.
Edit: Saw this from KTL yonks ago that has a perspective view on this also.
well it’s a practical solution, but not necessarily the most elegant .;@)LOL - I was going to suggest Dylan's mole grips idea..