It sounds as if some of you guys may have more serious problems than did I, but I have not changed tranny fluid, or had any other tranny mods, other than installing the detent. I could immediately tell that it would engage in 2nd gear earier and transmits a slightly better feeling through the linkage, and that it was an instanteous fix. I've even tried shifting rather softly into 2nd on numerous occasions, and no problems whatsoever. So, for $149 for the part, it's a relatively cheap gamble.
Pat