I too wil be building this kit and doing some hunting for reasearch I found this reveiw at Hyperscale
http://misc.prohosting.com/armourreviews/karlreviewsp_1.htmHere is a quote with information on one person's experience with the tracks;
" Six of the track "lengths" were used for the lower track run.
Two of the "lengths" were used on the top run - one at the front and one at the back.
36 individual links were used around the drive sprocket and idler wheel, plus to fill in the gap in the top track run"