I did drill larger holes in the separator plate in the locations specified by the instructions. The instructions also state the kit requires the use of the modulator so that's why I left it on. If I did install everything else correctly would leaving the vacuum modulator attached cause the transmission to up and down shift automatically even though the kit is supposed to convert the valve body to full manual? And if this is the case I still don't understand why the shifts aren't any firmer. If I do have to disconnect the vacuum modulator where can I get a plug from since the kit didn't come with one?