Would some one please explain to me why there are two different colors on Dragons magic tracks . They look the same and there is no indication on the instruction sheet that they should be alternated during assembly, and what is the best method to assemble them.thanks

Usually means there are left and right side ones. The difference can be extreemly subtle sometimes (like the pin on the outer side is a fraction longer).

Two different color Magic Tracks means the tracks are "handed". Left hand side and right hand side of the vehicle. In the instructions, on the track assembly step, there is a diagram which shows you which side is right and which side is left. Why they don't identify them by "light gray" and "dark gray" I don't know; that would be much better.
To assemble glued indy tracks, here's what I do -
Leave the drive sprocket and idler loose so you can slip them off when the track is dry.
1) Use a tailor's cloth measuring tape to measure the length of the track run and add in any sag you want.
2) Clamp a yard stick to the front edge of your work table.
3) Mark out the length of the track run with two pieces of masking tape.
4) Use Testor's cement in the black needle nosed bottle. This gives you about an hour to assemble the track run and form it on the running gear.
5) Assemble the track run up against the edge of the yardstick to keep the run straight. Periodically, use a ruler to push against the other side, then down on top, to keep everything in alignment. Using a pair of flat nose tweezers, grab a link by the guide horn and go at it. Glue, link, glue, link.....
6) When you have the run done, carefully pick it up and thread it onto the suspension. Meet the ends on the bottom and tape them toghether. Place on flat surface. Use a brush handle or similar to arrange your track sag. Let dry overnight.
7) Remove the track run with the sprocket and idlers, paint your track, and put everything back together.
I've had great success with this method and so have a lot of other guys I've shown it to. It really makes it easy. I hope this helps!

Usually means there are left and right side ones. The difference can be extreemly subtle sometimes (like the pin on the outer side is a fraction longer).

Yea I don't know why Dragon just doesnt make a "left" and "right" designation for their tracks. Park a picture of the tank and then diagram which ones are which. They go through all this nice packaging and adjective filled paper inserts describing every piece of their kits and yet leave something so simple out.

Oh well, I guess Dragon has to much on their hands between trying to make the next Panzer IV variant and trying to dig up plans for some super tank that was to enter Wehrmacht service in 1948.

hey all i have an m1 aim and i didn't think the "magic tracks" where too magic!! more cleaning up than i was lead to belive. oh well if a kit was "perfect" then it wouldn't be any fun!!