I had brake fluid in the booster many years ago. I mopped it up with paper towels and it has been fine since then. No removal, disassembly, etc.
85 GTV6 3L
76 Suzuki GT500
2011 Jaguar XKR
A little government and a little luck are necessary in life, but only a fool trusts either of them. - P.J. O'Rourke