[willchang]

This is amazing. I can get it to make almost any speech sound, but one I can't get is [s], because the model lacks teeth!

[slx26]

disable "always voice", and click a bit below hard palate, slightly to the right towards the lip (below the at in palate), so there will only be a small gap for the air to go through

[willchang]

You're right. It sounds to me like [s] with lip rounding, where the teeth don't contribute as much acoustically, but it does indeed sound like an [s].

[phamilton]

The model also lacks mouth width/lip shape, which is crucial for differentiating between Swedish vowels (for example i vs y, which have most of the mouth the same except for y has the lips protruding and i is more of a smile).

[SamBam]

Were you able to get "m" and "n"?

[willchang]

Yes, just click in the nasal cavity above 'lip' and 'hard palate', respectively, to get [m] and [n].