49 3600 has the stock lever action shocks. The manuel instructions for filling them with fluid say remove front cover and replace with one that has a fill plug(!?). I have wire brushed all 4 and cleaned with solvent. The front cover has NO fill plug. The only openeing I can find is toward the top back of the shock and it has a slotted head. This appears to be the relief valve comparing to the manuel. I'd like to keep the shocks, but can't figure out how to fill them.