My transmission seems to be slipping...torque converter??

Ok here's an update. Set kickdown as per instructions and verified shift cable in correct position. Verified bands set. Put pan back fill with new fluid. Started car checked fluid again topped off. Seems to be driving just as it should. No slipping....so far. Will monitor very closely. I appreciate everyone's help. I owe a lot of gratitude to the people here. I learn something everytime i come here. Thank you. I hope this is fixes the problem. If not ill be back...