On top of the radio

What is your question?

I started to remove the old couplings for the front drive shaft, there was no rubber conecting them ani more there where just flopping around, so i instolled new ones same size as the old ones, but now one side of the shaft will not reach the other end of the vehicle i hade no reference from the old ones i have rottated the new couplings and still missig a bout a 1/4" on one side or the other can you help please..