Rarrick, Samantha Carol. A tonal grammar of Kere (Papuan) in typological perspective. 2017. hh:phon:Rarrick:Kere
Not sure about these plosive lenition rules. There are additional rules that are hard to code in the current system; for example, any vowel apparently may be deleted before a sonorant, including an epenthetic semivowel. Most of the given examples of vowel deletion use /i/, however, so this is given here.
Maximal syllable structure is CCVC, but CC onsets are constrained: obstruent + sonorant, /sk/, or plosive + /b/.