Washer Clanking sound after gear case replacement

Brand:Whirlpool
Model Number:WTW5000DW1
Main Symptom: replaced gear case and now there is a clanking sound
What happens & when: clanking sound during wash cycle

Error Code (if any):none
Parts or tests already tried: replaced gear case
Photos / video link: https://drive.google.com/file/d/1VYu136IA_cmDGv8MK5436_qwNEQN9wt8/view?usp=drive_link