I just bought a 2004 Z4 for my son who just joined the Navy. The car only has 30k miles on it but there is a steering issue. I have the binding (stiff) feeling to get past when steering making slight turns. It has done it each time that I have taken it out, except for when I drove it in the rain ? It steered perfectly and smooth.I want to fix it before he gets out of boot camp to take it away. Is there a lubrication point for this problem? Or will I have to drive it to a Dealor? THANKS