The 2.0 spring works perfectly fine. You just have to set it differently(not as tight). The spring is not the problem, it is the factory settings and a bad run of plastics that caused the problem. The plastics were molded incorrectly. The cup for the spring was molded too small and forcing the spring into it caused them to break. I have been using a properly set 2.0 spring in both my 2.0 buggy and 2.0 truggy without one single issue.