Speedometer cable trouble!

Found the problem (I think). The plastic connector that latches to the back of the speedo was cracked (allowing the cable to enter the speedo at an angle). I presently have it sitting clamped under a lamp with JB Weld curing. The very few boneyards around here are picked clean, which is why I'm trying this. By the way, the inner cable itself is fine, no freys or nicks. Thanks for all the suggestions!