If you did the work yourself then spend the money and have your vehicle
inspected to determine the cause. DIY is fine but sometime it's more cost
effective to let a professional have a look. If you want to fix it after that
then have at it,

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"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….