Hello All. 

I was noticing the other day that the brakes seemed a little softer than usual. While playing with them, I noticed that when I had put some pressure the brake pedal while stopped, it would slowly sink, even though I was not changing the amount of pressure applied. I don't appear to be losing fluid. After a little archive research, it looks like it's likely a master cylinder. 

Anything else I should look at?

Thanks!
Aaron 
'87 Westfalia