I had previously posted my FL build for the rear bumper. Now i am trying to build the front part of the MA chassis. I noticed there is a challenge as the bottom of the front part of the MA chassis is actually of ascending angle. I had built a FL bumper for the front chassis too but am worrying if the 2 protuding front rollers will pose a problem when the car climb up steep slope (i.e. front wheels lose contact with the ground). The ground clearance for the front (without brake/sponge etc) chassis is 1.5mm Most of all, the burning question i have is whether the "contraction" is sufficient (i.e. the part where both 'arms' swing toward the front wheels). The sole reason for such build is to counter the rocking straight section of a track.