Trans leaking from bell housing
Post a picture or two of the torque converter hub. You said it was a new converter and I am wondering if the weld that secures the hub to the converter body is sticking out too far toward the transmission causing damage to the seal and bushing. Just making sure before you get it back together again. Those bushings and seals typically do not fail without a reason. That is why
@CudaFactHackJob suggested checking input shaft end play before pulling the pump out. Do not skip this step.