Ok thanks guys. Yeah I do have the blue rotor head. Just didnt try real hard to get those tough screws out, didnt want to strip them. I have removed all of the blades and they were balanced (using the can technique). That did reduce some vibration. I just didnt check the shaft or anything because I didnt know how to remove the flybar. Now that I know I will check the rest as you suggested. What is the upper bearing and cup? I'm sure my flybar has some bend to it but it's pretty eye-straight. But just to be sure its not something else (because my shaft is new and was replaced at a hobby shop) can the broken tail section or gain effect vibration. And also, like I said before is it normal to have some vibration? I may just be becoming oc about it. On th plus side I can usually get rid of drift and yaw issues with tweaking and I am flying the thing much better.