Kart handling theory:
     1. Chassis tuning for good turn. http://www.brendel.com/racing/good_turnin.shtml
     2. Kart Steering, Physical Forces and Setup — Theory and Practice, -
         http://www.karting..co.uk/KandK/Tech/KartSetup.html
   
  Perfect theory: http://www.tsracing.com/Manuals/Veloce/VeloceIndex.htm 
  Practical advices:
   Chassis setup: –
   http://www.kartingzone.com/articles/chassis-setup-l
   http://www.phantomchassis.com
   http://www.swisshutless.ch/kart/en/karting_techical_information_set-up_manual-2-6.html
   http://www.italiankart.com/manuale/index.asp 
   Some articles with practice advices 
   http://www.kartingzone.com/articles/ 
Equipment for adjustment: 
     3. Leading American kart adjustment equipment manufacture LONGACRE  RACING PRODUCTS. - www.longacreracing.com
4. Quality Karting Parts and Accessories - http://www.just4karts.com/products
5. Laser devices for chassis setup: Sniper Precision Technologies. - http://www..sniper.com.au
6. Tires balancing equipment: http://reviews.ebay.com/How-to-Balance-a-Racing-Go-Kart-Tire_W0QQugidZ10000000000065537