Lubricating both sides of the plastic tabs on all track ends will help ease the connection process. I use a little bit of vegetable oil in a small plastic condiment cup, and a Q-tip. Soak the end of the Q-tip in the oil and then roll it around on the interior side of the cup to squeeze out the excess. Then dab it on the outsides of each tab at each end of the track sections.
These staged pictures show you how to do it. First dab one side of a tab.....................
Then dab the other side.
Do the other end of the track section, then keep going on all track sections. I want to say that it cuts the assembly force needed approximately in half when plugging the track sections together. Put on a pair of gloves, and you should be able to snap together the sections of track, even when they are laying flat on your table top. Also, visually check the copper electrical tabs right before you snap the track sections together to make sure they are all aligned for proper contact. If not, bend them into shape quick-like, then continue with your track laying.
