904 shift problem

"Right now the only thing I know to tell you that will help anything is you can back your throttle pressure linkage off some and that will allow it to kick into 3rd gear faster."
OK, and are you refering to the kick down linkage?? And how do I back it down, I guess I am not quite understanding how that will help. As it is if I stomp the pedal it dosn't seem to wanna kick down like it should, so if this will solve the late 3rd shift some and make my kick down work as it should so I dont have to manually pull it down that would be great.
Also what do you mean by "overlap" on the 2-3 shift. I am not a mechanical noob by any means (38 and have done more than space allows to even talk about here) but I have always played with four speed stuff and never got into auto's. This is my first and it is proving to me why I like manual trans better. Thanks.