PooBear - I wish I could help, but I'm having pretty much the same problem. My two cats and I are in the middle of toilet training. We started in mid-March and it's the end of May. They go in a metal bowl with a cup or so of litter in it, placed in the toilet basin and the lid holds it in place. I'd been reducing the amount of litter down to about 1/2 cup, then last weekend I took all the litter away and put a bit of water in the metal bowl. They did NOT like that! They held it all day until, fearing an accident, I dumped out the water and put some litter back in the bowl. The next day I tried again with no litter
and no water. So I came home to find poop in the bathtub and poop on my nice rug from Macy's. RRRGH!!! (I hear it's recommended to use enzymatic cleaner on that so they won't try to poo in the same spot again).
So we're backing up a stage and will just do litter in the bowl for a while until things are status quo. But I have no idea how we're supposed to advance at this point. If they just plain don't like the water and insist on litter...?!?! I live alone and work full time so I can't be there all day long to instantly pick up pee and poop. I was very optimistic about training - some people must have more cooperative cats because they made it sound so easy.

I'm not giving up...yet, but this is very discouraging.
BTW, they are both sweet and really like the food treats, also being brushed, so there is some incentive there for them when they go in the toilet.