I went to the junk yard again

Gates of Heaven!
I removed starter for my future project

I managed to get it out without removing the oil dipstick tube , just by rotating it certain way (orange arrow)
I've noticed that some Fits are showing brake fluid seepage from the wheel cylinders so I took one cylinder apart from the car that had routine brake fluid replacements (every 3 years or so)


The cylinder bore had no deposit or bad corrosion but instead showed 2 wear marks:

A crescent shape wear pattern at piston pivot point inside of the wheel cylinder
Another photo


So... master cylinder might have one too
Good luck replacing fluid)