I'm not sure what all these major problems are that you are having with the car, mine is box stock apart from:
£1 worth of drive pins
Option springs
Drilled pistons
And I have found it to be a very strong and reliable car.
Perhaps some of you guys need to learn how to
build a car for the abuse we give them these days on the track with the power we have. There is more than one way to build to the manual
No matter how much you spend on a kit, if it is thrown together it will not be reliable
G