When you set number in position for the part, sometime it will not work. For example: Your part position is 22, 6, 98, you want try to set number to 0, 0, 0, when you type and enter, it did not work and it will return as 22, 6, 98.
To fix this:
Delete all Weld children in your part
That it, just set number again and it should worked.
Hope this will helped you. This is my first post and my English isn’t good, so please forgive me if anything have an error. Reply me if you need help.