Looks awesome man! I would suggest a wooden dowel as the pull chord piece, and maybe a vent piece as well, but I am just a projectionist and this is solely my personal opinion, but it really looks great man good job!.
Ian
Hey if you need a resin vent piece, I would happily supply it for you. I have a few pics on my post of my Evil dead II Chainsaw prop, as well as in my albums.
Ian