As I posted yesterday, I'll be pulling Twin-Bred from Smashwords and the places to which Smashwords distributes, so as to give KDP Select another try as I publish the sequel. In fact, I've been advised to do so ASAP, given the sequel's May 23rd release date -- so today is the last day the .epub of Twin-Bred will be available for some time. (And to repeat, it's free while it's available at all.)
BUT: I am not currently planning to put Reach: a Twin-Bred novel into Select. Not now, and not any time in the foreseeable future. I'm reluctantly accepting the restrictions of Select in order to distribute the first book far and wide, in the hope that the book (and the teaser chapter of Reach at the back of the book) will lure people to the sequel. The sequel itself is going to stay available in as many formats as possible. And it probably won't be free very often. As I've said here and there, $2.99 is around (or less than) the price of a latte, and I hope the book will linger longer.