C3PO unlock and 7*

I was able to do the 7* tier with Chirpa g10 + 1 piece, Wicket g11 and no extra pieces, Elder g11 and no extra pieces, Paploo g10 and no extra pieces and Logray g8 one piece away from g9. No Zetas and with mods that would put them to about 190-200 speed each. It felt like it was probably right at the limit of what's needed to me. Literally spent 2+ hours straight grinding at it and finally got lucky.

This was far worse than the Chewy event but it felt like the same mechanics were at play. When you get dealt the lucky hand where you seem to be getting "help", just don't waste the opportunity.