DO NOT add air to your front forks. Those are to let the air out of the forks at different elevations and tempratures to equalize the outside air pressure with the air inside the forks. If you or someone has "added air" with an air compressor, you'll blow your seals out, possibly that is why they are leaking. This is a common misconception with those valves.
About twice a year or whenever I think about it, I wil just puch down on the center of the valve with my fingernail, and a little air seeps out.
RIP - Yamahondaman!! You will never be forgotten!
RIP - Sam Brehm!! Gone but NEVER forgotten!
RIP - Sandpuppi101 - You will live on in my mind - I miss you friend!