Stuffing Box
I'm not sure if the 29.5 has the same white nylon stuffing box that the 28.5 came with, but if it does, you've got to somehow remove a washer that fits between the packing material and the packing nut. Getting the packing nut off is usually simple, as the nylon doesn't corrode or freeze like bronze does. Getting the washer out, prior to getting the old packing material out, is a real challenge. Some people do this by undoing the clamps on the shaft log and wiggling the whole gland forward,and then pulling it back, which may push the washer forward too. Others report getting the washer out with a small pick. Obviously, this is a job best done with the boat on the hard.