I bought one last april. You will have go over every nut, bolt, etc to make sure they are tight. grease all available fittings. Also front and rear diffs were low on fluid. Make sure you follow breakin period. might be missing rubber bumpers for box. mine runs great, haven't had any issues other than that noise on initial takeoff. I have 70 miles on it. it does run better with time, make sure you use 91 octane in it.