A904 TF-2 kit Orifice plug 3rd gear; Yay or Nay?

i now wonder if thats whats goin on with my 904 i used a pa performance rebuild kit with i think a 4.2 lever n billet servo n 2500 hughes converter n a transgo tf2 kit goin from second to third either hits hard or feels like it overlaps i know i didnt install that plug i am pretty sure my directions said that was 727 only should i drop the pan n valve body yet again? been drivin it for months hasnt givin up yet but dont seem right