Wait until you see the new motor control. You might think you have the wrong part. The difference in motors is pretty cool, too. Say good bye to most of the 'whine' the older motors made. Sometimes I have to open the dispenser cup and listen for the liquid in the balance ring to make noise so I can tell if the new motor is turning the drum...
In the picture you took with the latch exposed, you can see the scrunge that those tub brushes can collect. Believe it or not, those brushes should be a light grey like the tub cover. All MAH3,4,55,65,7500 owners need to check theirs.
The rust on the top around the dispenser is to be expected. They didn't coat the top as well around the opening as they should have and a combination of water, additive and bleach splash did it's work. The later tops as well as replacement tops came with some color matched tape covering that edge. You can also see that the housefrau didn't clean the dispenser as well as she should have, either. That blackish stuff is old, degraded fabric softener (which can ALSO help the mold/mildew problem occur...).
When it comes time to do the boot, let me know. I have a trick to putting the boot cable and spring on that works suprisingly well and it will only cost you a coat hanger...
RCD