First of I just want to say Great model I am impressed.

The only thing that I have to critique is I think that it needs some hydrolics where the legs joints are. with there positioon way in the back like that it would take an incredible amount of energy and torque to even move that thing and that wasted energy could be much better dispersed if you were to put some hydrolics there to move the legs up and down. just my two pennies. awesome renderings