My dad uses Phonemes at work and told me of a site that has the complete listof 72 phonemes. When he gives it to me, ill pass it on. Again, I am canadian, and still have a bit of my french/native accent from when i used to live up north so i do pronunce some words rather strangly. That and one grandparent is scottish and the other austrian, and then have wierd ways of saying words that I have picked up. But when i say tsh it has a sharp ending, whereas the sh doesnt give u that. If i try to say church by saying 'tshurch' it does work, i see ur point, but u still dont get the hard sound that ch gives you. Perhaps its more horrible accent which i hate!!!
I hope to stay in touch with this, thanks for your help