If the problem with your Performa washer is that is leaking water through the neck of the transmission, the problem could be a bad tub seal.
The tub seal is connected to the tub, and seals the hole that the transmission neck goes through in the tub.
Trying to explain with words how to check & replace this seal is a hard thing to do.
The best thing to do is to watch how it is done in a video.
To see how to check & replace the tub seal in a Performa washer, view the video below
Below are the links to the parts needed for this repair.