Speedometer Replacement/Cable/Horrible Day

Dad and I are taking his factory speedo and tach to these guys, they are about 2 hour drive from us. You are in Cali so you probably drive your car year round ya lucky hound or I would say send it to me and I will take it up with dads stuff
http://www.mrheaterbox.com/

Well the good news is it turned out to be a speedo cable issue. The cable I ordered off of e-bay was way too long and I guess any kink in the cable just wreaks havoc on the whole system. The bad news is with the original speedo cable my speedometer is off by about five mph. It's not a big deal but still an issue.
Mr. Heater box looks to do some awesome work though. Those are some pretty old gauges on their restoration pictures section.