My brother has an issue where he wants to down shift and its hard to put it in gear only when he wants to down shift. other then that car shifts smooth when driving it. for example he can move up on speed and shift all the gears without and issue but when hes slowing down and down shifting it feels like he needs to force it in.. I dont know if its an trans fluid issue bc we used some mecro number? whats everyone running or recomend