I had a torque converter put in my truck a 99 f-150 5.4 cause it was slipping between 30 and 50 mph and it didnt fix it so i took if to my ford dealer and and he said it was the slip yoke slipping and it was making like a metal clanking sound like some tin banging would that be from the slip yoke to? do you think?I told them to do a power flush while they were in there do you think this will take care of it