purchased a ut49103 last friday 12/23/11 used it 4 seperate times - total of about 1/3 cord of spruce split - works great - BUT i am getting a small amout of leakage - most noticeable when it is not working and setting - appears to be coming from what i believe is the "gear box cap" - losing approximately a couple "shot glasses full" overnight. Is there a seal there i can replace? Can i just keep monitoring it and simply replace the fluid? Would like your advice. heathera@gci.net