Track light does not track well
I have 2 strips of track lights high up on the ceiling with 3 lights on each track. I got them from Lowes a few years ago and about a year ago while trying to slide one light on the track it broke off. As it looked ok with 2 lights I left it as is. Next one light bulb went out on each track and I replaced them and they still failed leading me to believe the contact is not good. Yesterday I took one track down and did not see how to slide the fixture on the track, I did not see a loose connection and the fixtures seem very fragile. Furthermore I cannot find the manufacturer for this. A label says E138385 model 14881 and a google search shows something by Evolution Lighting but there is no sign of a manual.
So just rambling, any ideas are appreciated.