69 Valiant, Speedo INOP, 904 Trans Help

Hi Guys,

Picked up this 69 Valiant, the speedometer doesnt work, dash lights do work. I pulled the speedo from 904 trans off and spun with my fingers and I could only spin it to about 20kms "so the speedo head works" and it wasnt that easy to do, it felt like it may be sticking. My question is how easy should the cable be to spin to turn the needle? and where can i can the little plastic gear which wears out due the the cable stripping it on the trans side. #3 how do I remove the plastic piece in the trans which the speedo cable threads to on the trans? I removed the 1/2 bolt and c clip like retainer and tried to pull and nothing.

Thanks,

Jay