Michelle Kranicke’s Zephyr Dance hardly resembles itself from 10 years ago. Kranicke has been wise to allow her company’s mission to evolve alongside her work, and has found a gem in The Balance in Between. In a developing process that it likely to span another two years, Kranicke’s September installation at Defibrillator Gallery would be one of the space’s last public performances. The dance community was dealt a pretty harsh blow in losing Defibrillator, a tiny space on Milwaukee Avenue that became a popular hotbed for experimental performance. Zephyr is not for the faint of heart; Kranicke challenges her audiences with durational performance that takes a bit of patience to get through, but ( at least in the case of The Balance in Between ) is worth the wait.