My track is preventing my sliding glass doors from opening and closing smoothly. How can this be remedied?

Thanks,
MHeape

Those tracks can be a pain, I use to use Q-tips to get into the little groves to remove any trapped pieces of dirt etc that get into them. Also when you get them clean, a little bit of wd40 will help them glide much more smoothly.

Also, check to see if the track wheels are not worn out. As I do maintenance, quite often I have found the wheels worn out, and must be replaced.