so i started my truck up for the first time today and went to take it out and it scared the piss outta me. now, i only drove this truck 3 times before it went under the knife, but it didn't do this then. during my build up i put a different axle under the front, but i don't think that's the problem. the steering is crazy loose. i couldn't keep the d@mn thing going straight (which was really scary with oncoming traffic on a narrow road in the rain w/ no wipers or seat belts ). *disclaimer - please forgive my overly-technical jargon* anyway, i notice that i can shake my steering shaft back and forth inside the dealy which goes thru the firewall where the steering shaft should go into the steering column (LOTS of movement). it can be moved a great deal. when i noticed this, i took a look at my buddy's truck and he has a part which i don't. the following picture is of his truck and what is circled is the piece i'm missing. is this what is causing me to be out of control? if that's the case, is it something i could easily pull off of a truck at the wrecking yard?