MDR-V500- Headphones repair parts

I have a pair of sony MDR-V500 headphones. The sound is still good, and they are comforatable to wear. So comfortable that in the last 10 years the plastic parts on the ends of the band to hold the ear pieces have broken and been repaired with epoxy, nuts & bolts, JB Weld, string, tape, etc.
It's about time I print out new ones

Updated 2012-07-17:
Adjusted the shape based on a fit test. The hanger is less tall, and is slightly wider since the original didn't fit properly over the ear pieces without removing the rubber bumpers.
I suspect I will have to refine the arm-end pieces and shrink both them and the toggle eventually.

Updated 2012-07-12:
I suspect that the original model had a diameter used as a radius by accident. I have corrected that, but now it looks too small. Even if the radius of the outside of the ear-piece is correct, now the connectors look way to beefy in comparison. Maybe I should just go with it and add some personalized decoration... either that or try to slim it down closer in size to the original part.
Ok, slimed it down now. Looks better.