Hate. Perlick. Taps.

Traditional taps never leaked and they are best in my experience too.
I also wanted to add that how traditional tap work:
The water pipe is connected to the bottom. Water is then held in a chamber until required. When you want water all you need to do is turn the handle anticlockwise which unscrews an internal valve and starts the flow of the water.

Leak problem solved by cleaning? If so, how long between cleaning?

How long did friend wait between cleanings?

If cleaning fixed the problem, was it mold? If so, good thing the taps were cleaned.