Hello everyone. First time poster but have been lurking for a bit. I have a 2006 5.4 FX4 that has had alignment issues since I purchased the truck new. It seems that after I get an alignment done the truck will track straight for several thousand miles and then gradually the truck will start to pull to the right. The truck is not driven off road and I haven't ran over any large pot holes that should effect the alignment. Is this a common issue with ford or is there something I should be looking for that is wrong with the truck. I have done a visual inspection and nothing looks bent or out of sorts with the front end suspension parts. Thanks for the help