Here's a stupid question but I'll ask it anyway. While rebuilding the front end of my 55 1st 3100 I noticed the center link isn't straight but instead has a uniform bow in it.Is this "normal"? If not, should I attempt to straighten it? Also, anyone have any suggestions for removing the ball studs on the various front end components? I've got all the replacement balls and sockets but can't unscrew old ball studs.