Torque Converter Install and Question

[Red5Ltr]

First look below at my signature to see what I have in my Mustang.

I had a 3000rpm stall converter put into my Mustang the other day. This converter is a non-lockup converter. I also have a Transgo shift kit in my AOD tranny. Well, the car used to be pretty jumpy around 30-35mph I could stomp on it and it would throw you back in the seat and now it pretty weak. I also had to have the tranny filter and fluid replaced because the fluid in the converter was pretty dirty. I guess I don't know enough about how the whole torque converter thing works exactcally. I guess with a higher rpm stall I was expecting alot more than what I have. When ther tranny was dropped to get the converter in is there something that needs to be adjusted?

I need your help with this.

Thank you all

John