Thanks for the pics of the build you took a lot of care building your zilla.  I have a good idea where to put the gussets now.  Also Great advice on the circle track parts supplier.  Speedwaymotors had them for 3.99 for a 25 pack of 1.5" and 4.99 for 25 1.75" the shipping is $15.00 but is still farley cheap for 50 gussets I think.  I will try to call a local shop tomorrow and see if I can get them a little less but i doubt it.  Do these sound like the right size or did you guys use bigger ones.