my car or should i say my engine has a tendency to vibrate from mid 3rd gear til i let off in 5th somewhere. shiftin from 3rd to 4th isnt bad but when i go from 4th to 5th i can really feel. its weird because sometimes the 4th to 5th vibration stop when i pull in the clutch but most of the time it keeps vibrating. my whole clutch is brand new i replaced everything i cud that had to do with it except for the steeda cable kit. it cant have anything to do with the clutch can it? i remember the vibration with the old clutch. not too sure where to start. my harmonic balancer i just put on about 6 months ago is a factory replacement and that made a huge difference but it seemed to come back so idk any help will be appreciated.