Last autumn I was drilling and Sub discimg with a Class Axion 840 and it was pretty light on the front, this spring using exactly the same implements I was using an Axion 810 which was far better balanced, both without front weights. The only difference is that the 810 is on 700's whilst the 840 stands higher on 650's. Both tractors are physically the same size but the front end sits so much more planted on the lower model.