send 'em to me at
[email protected] and I'll get them hosted first thing when I get home this morning.
As for the shakiness--I was going to dampen it by using a slightly different mounting system, but still mounting to the headrest shafts. Instead of making a clamp setup, simply drill a hole in the bar. Drill it slightly larger than the headrest shafts--to the point where it slides freely but does not rattle. The take the headrests off, slide a spring on each one, slide the bar on, and slide another spring on each one. Then just slide the headrest back down until it's just barely beginning to compress the springs. Or you could take advantage of the cushiness of the seat and simply drill several extra pieces and stack them so it all fit's firmly between seat and headrest
I can't really think of a way to dampen axial rotation that won't nullify the vertical dampening, though.
Crappy illustration: