Different /e/ phonemes in Siouan?

[Rory M Larson]

> Problem 1:  Ken Miner found that ALL monosyllables in Winnebago (at least
> for major categories like noun, verb, etc.) had long vowels in isolation.
I
> think that was a rule: no exceptions.  If that's true throughout Siouan,
> then differences should be neutralized in this environment, and contexts
> with affixes should be sought.

Winnebago clips the trailing vowels of a lot of words that
would have two syllables in other languages, doesn't it?
So would words like *s^uNke in Winnebago be something like
/*s^uNk-/ in combining forms, but /*s^uNuNk/ when they
stand alone?

Rory