anyone have trouble with the blue dot taillights on the 50-51 trucks. I have to constantly mess with the socket inside the light to make them burn. they seem to get turned from vibration or something to where they are not making good contact so they don't light up.

 

That is common with all the reproduction sockets. Some are worse than others. You can try taking the bulb out and squeezing the socket together, if you can make the bulb base fit tighter, it helps.