Yesterday, I went to the dealer to buy some parts. In his shop, they were repairing a B&S 305 cc. As I'm always curious, he showed me the parts he had to change inside the motor. The motor had a cam problem. The cam gear is made of PLASTIC press fit on a metal shaft. The cam lobes are even made with PLASTIC !!! I never thought seeing such cheap parts inside an engine. The cam gear lost some teeth. I'm still amazed by what I saw. Unbelievable !