You should be able to roll them right back in. Put one in & hold it while you turn the carrier over enough to put the other one opposite it. Then roll the carrier till the hole for the pin lines up with both gears. If both don't line up remove one & move it one tooth over. Start the pin through one gear till you get the C washers on & the axles pushed out. Push the pin rest of the way in & put in the lock bolt. The later models had thrust washers behind them but I don't think that model did. The earlier models had a block between the axles but I don't think that one did.
