my situation is i got a kaaz lsd in a b16 tranny and was working fine before i did a engine rebuild. im not sure what oil was in the tranny before, but i got torco gear oil with lsd additive. it works fine there is no noise, but now there is the illusive 3rd gear grind in high rpms. so i was wondering if just straight gm synchromesh will take away the grind. thanks!