Not sure what you call them but I have a 7.5 footer kaul-tronics. The arms (don't know the correct name) that hold the lnb got bent. Can I buy replacement arms for this?
The manufacturer KTI was bought by California Amplifier about 10 years ago. You might contact their support department regarding the availability of replacement arms.
Have you considered purchasing the appropriate lengths of electrical conduit and use one of the existing legs as a template to DIY?
The guys here talk about converting buttonhook feeds to quad-leg, so replacing some existing bent-up supports shouldn't be a big task.
I made up some for a small Ku dish to hold a C-band LNBF, and it was even adjustable for focal point and F/D.
Was based on work I'd seen here on the forum.
Show us some pictures of what you've got to work with; I'm sure someone will have 12 good ideas on making new supports.
I'll just recommend spraying 'em with some flat gray primer (that's what I did for mine), but in truth, glossy won't matter.