try changing your transmission fluid instead of the shifter first.the previous owner could have put heavy weight old school oil or who knows what in there.i had good luck with redline D4.it shift's smoother than the stock stuff did.do a search on here for trans fluid and there are a lot of discussion's about it.
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2010 2SS/RS M6,kooks 1-7/8 LT'S with hi flow cats,factory NPP cat back system,ADM performance street c.a.i.ADM built LSA with 750+ package,160 deg. thermostat,mti six shooter shifter,jac fab front license plate bracket and tunnel brace,eibach 1 inch pro kit,ADM exhaust controller,custom ADM performance tune,703 rwhp 704 rwtq
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