NiMo-Sorry for the loss of your class. I understand your problem. We had a similar Problem at Mikes running slightly up-powered World Gt cars on asphalt 2s LiPo, 10.5. Here is a list of complaints that may have led to the classes demise.
Front full size graphite bumpers broke regularly-Spares were a week + 1 day away so no bumper for the next week either.
Rear CRC axles went through a teething phase where the threaded axle ends pulled out. This happened on every single car at our track requiring a new axle.
Rear pod plates broke at the link mounting holes by tearout of the screw.
Screws were lost on each run making the car undrivable.
There was a Lack of rear cornering and forward traction even on medium high traction days.
I have tried to rectify all of these problems in my line of cars with
A shortie bumper to complen-ment the stiff foam bumper
more material around the screw holes at the front of the pod
steel screws with loctite where needed
More rear traction from the 3-link
The cars are still harder to drive than touring cars but make up for it in speed. If you take the speed away then it is just different.