I found a website megacycles cam . They make a 350x cam with bearings similar to a 300ex or a 250x . They can also fix your head if your cam has damaged your head . They just bore it and install a slightly bigger bearing . I thought this would be helpfull if someons has a 350x and looking for a better cam design . It is a little expensive at $300.00 but that is for a perfromance cam with the bearings .