I'm currently in the process of tearing mine apart. The base section to pull it apart is frozen solid but I've been hitting it with PB blaster all week and this morning I got the base to rotate a couple of turns before it froze up again. Once I get it apart I'll be able to determine how to fix these things. I called all over for parts and/or a replacement and nobody seems to have them available.
I don't really need the pylon but my wife wants it just in case someone wants to tube. I was just going to put a cup holder in it's place as that would have more value to me.