hey there, I have a 2001 320 with a manual trans that works great except for fourth gear. One day it shifted perfect, the next day it did not. It won't slide into fourth. Any suggestions? Bad linkage? internal problems? The car has about 160K miles and am wondering if I should look to a re manufactured trans. They are hard to find. I won't do a donor since I have no assurance that it will be any better than my current one.