Quoted from j_m_:takes 2 hits on mine as well (I'm still running 1.70 code), but the game even has a call out when you hit it the first time (after dropping all 3 in-line targets) and the playfield lighting goes blue on the premium/LE
Must be a code setting or possibly 1.7 being different. On mine its 1 hit after the drops for first mb, then 2 hits on 2nd mb, etc.