I gotta agree with Jack on this one. If u think of a manual trans, with a shift firmness of 14. Its like dropping the clutch EVERY time the transmission shifts gear. Too much slip as well as too little are very bad for automatic trannys. Maybe Cody will jump in with his expertise.
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DJ Phoenix (my modded) Hi-1200/240Tow/75FS/80DD/100/140SS +Minotaur
ASE Master Auto Technician 
2001 Ford Excursion 7.3 4x4
Projects. 1970's Hustler and Max II Amphibious ATV's
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