power dies at mid-range... please help!

Cool I called one right for once! Lol...I dont under stand the choke thing.It must have really been adjusted tight and not opening? Are you sure the choke opens on it's own? Electric chokes are super easy to adjust,just turn it until it just closes.Done. It should open fully from there.

Did you make sure the kickdown is adjusted right as well? If not it will destroy the tranny quickly..