Speedometer issue needle acting slow and bouncy, Any PNW speedo shops around Seattle? Options

[TC 914-8]

The other day I noticed my Speedometer needle bouncing 15-20 MPH swings while at crusing speed. I knew my speedo cable housing was burnt from resting on the header long time ago. I ordered a new cable, a simple job to replace if you don't have a center console, or a 500mil battery relocate cable running in the tunnel along with the speedo cable. So after 2-3 hrs to do a 1/2 hr job I think I'm done. Go for a test drive, and nothing (IMG:style_emoticons/default/confused24.gif) The needle dosn't even move while driving. I pulled the speedo out and verified the cable turns when driving. Hooked up my drill motor to drive the speedo manually and the needle barely makes it to 30 mph at full speed on the drill motor. Put it back in go for a drive and at 30-40 MPH on the GPS the speedo is only 20mph. The needle hangs there when stopped, and now my odometer dosn't turn or clock miles.
Obviously something broke or is worn, has anyone done this repair? is it serviceable? Or am I better off sending it out?
Palo Alto spedometer or North Hollywood Speedo are the only ones I know about.
Any PNW folks know of a speedo shop in Seattle or localaly with out sending it off?

[Tom]

Jeff,
LOL!!, What's a speedometer?
One of them new fangled things that some folks use to determine if they are in for a ticket; they use them because they don't know how to convert RPM's and gears to speed. (IMG:style_emoticons/default/smile.gif) (IMG:style_emoticons/default/lol-2.gif)
I spect guys like you could tell speed fairly accurately by the music of the 6's RPM's alone! (IMG:style_emoticons/default/biggrin.gif) Kinda like telephone poles going by like picket fences.
Tom