I wanted to replace the whole center post with a long bolt,
but i haven't been able to take out the bottom piece of the center post
and it's quite convenient to screw-open the genny in 2 parts.
so this post is a ss bolt m3(3mm) about 26mm long
at the bottom of the deck i've put an extra rubber washer for some leeway
and a nut to fix the height..
the spring comes from a ballpoint-pen, cut to length (still looking for a cheap ss one)
rest of the parts are stainless steel, mostly 304, the rod is 316 stainless
I will post a pic of the bottom of the deck when my tank is not full
you can pull out the extra dripper post with a pair of pliers,
the hole doesn't go all the way through the deck, you could go for
a u-wick, dual wick setup, but the hole is a bit to close to the other
screw-hole in my oppinion
ps sorry for late reply, i'm moving to a new place