[ATM] Wire Spider Vibrations

[Jack Swaton @ Starry Host]

My scope is nearing completion but my wire spider produces very rapid
micro-vibrations for minutes. I can't post photos at the moment, but the
basic design is 3-vane with two support wires. That is, for each of the
three wires, I use a piece of wire that starts around a screw on the
secondary mount and then travels to the OTA where it feeds around a cup hook
and then back to the same screw it started from. There is about an inch
between the top wire and the return bottom wire on this screw. The whole
route ends up making a long, narrow triangle between the spider hub and the
OTA. The upper and lower portions of the wire is separated by a piece of
plywood which is actually part of the secondary mount.  Each of the three
wires go out at 120 degree angles to the OTA. 
 
In an attempt to dampen the vibrations, I connected a single wire from the
secondary mount to the OTA. These two wires form a 180 degree line across
the OTA.
 
So I'm really asking what the basic design parameters are for a wire spider.
I've studied the images I've found on the Internet, but I must be missing
the engineering for stability and dampening.
 
Thanks,
Jack