the thrust just seats in and then torqued down to the correct specs. thats it, no force involved only when checking the clearence you move it with the crank in place. is the flywheel in correctly? it could be in backwards. wheel looks the same but there is a difference. also the torque converter slides in and while turning should slide in; then once slid in, turn again to make sure it is in all the way. over all the fly wheel or the converter is not in correctly.
