Stall and Shift RPM Question.

What's the tune on the engine? You say it wants to creep in gear, doesn't start pulling til 2500 rpm. There's a lot of factors we don't have info on. If the engine needs more timing advance it will effect the way the converter acts at idle along with engine response. There's a lot of other things to sort out before jumping on a major expenditure like a new converter and they only cost time. Not trying to be a butt, just don't like seeing people spend needlessly. I can't find it right now but there was a good thread about tuning and the effect on torque converter. Maybe someone recalls it and will post the link. It was very informative.