End of the road?

Well, we’re having some problems. To say the least. After installing the new steering systems at either end, we had a lot of problems with the gears not locking correctly in the drive train. When under a lot of force, the motor would stall and the gears would skip repeatedly. We reinforced and consolidated the central drive axle bracing system, which helped solve the problem, but the interface between this axle and differentials at either end of the car also skips. We don’t think we can fix this problem. We have been dealing with the physical limits of the Lego system since we started this project, but we’re feeling it now more than ever. We have pushed the pieces up to, if not past, the very upper edge of their capabilities.
More and more, we are realizing that we are nearing the end of the road. Whether or not the car functions as desired is somewhat immaterial. At a certain point, we have to deal with the fact that we can’t make it do any more stuff.
We’re considering some potential drastic overhauls to the car’s basic functionality. The concept of a central two-speed transmission with a driveshaft extending to two differentials at either end may need to be rethought. I suggested an articulated steering module, doing away with the need for a driveshaft, with a motor and transmission at each end, and full-axle suspension. This would do away with the need for differentials, universal joints, and almost all axles. It would also require completely rebuilding the entire car from scratch and scrapping all existing systems. Bar none.
We may yet be able to salvage the existing systems’ functionality. And regardless of what happens, we will press on. The LC(A) will never die.