I have a Rock Shok Sid Race fork. Was chekcing the pressures the other day and noticed oil instead of air coming out the bottom air valve when I disconnected the pump. Any idea what could cause this, I believe I have a sealed air system, could a seal have damage to it. Have never noticed this before. Shock was fully serviced less than a year ago along with an end of season recheck in the fall. Have only put 150-200 miles on it since. thanks for the input.