Speedometer needle bounces over bumps

I believe the speedo end is just a square end on the cable. If it pulls through easy, it should go back just as easy. Now when it gets to the top you will have to rotate it to get it into the the speedo drive hole. As long as the inner cable comes out at close to the right angle it all aught to go right back together, Worst case you have to remove the cable from the speedo and then reattach by feel. It's do-able...