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Interesting device !! Seems that it's purpose is to support the actuating
rods mid length.
As t is plastic, odds are that any used ones are failed or about to. the age thing and plastic.
My inclination would be to make a facsimile from carved and drilled alloy or plastic. Or cut and weld metal. A mall flat piece, a screw and two tubes welded or brazed to it. Lube that and it is forever....
The idea seems to reduce flexing of the rods. So, I might think of beefing them up to stand alone???
I don't see why a good epoxy meant for plastics wouldn't work?
We have one of those small blade type coffee grinders which my wife developed a habit of banging on the counter to loosen up the grounds when done.
After many years of this the base broke in a 360 degree circle off the bottom of the grinder.
I cleaned it very well, scuffed up the area surrounding both sides of the crack and used epoxy to glue it all back together with a nice build up everywhere.It's been working just fine for 3 years now.
I also just finished using an epoxy based repair for cement to anchor some stair rail posts and re-attach two broken corners of some cement stair treads. If you get the right product it should be great.
Glue some quality pieces of plastic on there and drill it to fit.