It's been one month since Minden resident Dave Brady donated a kidney to friend Toby Cooling.That same day, Cooling's wife Diane, thwarted in her attempt to be her husband's donor, gave her kidney to a woman she had never met.Completing the picture, Brady's friend Reagan Eilers also received a new kidney from a California stranger, in a process known as "kidney paired donation" that involved as much synchronicity as surgical skill.The lengthy procedure took place May 18 at California Pacific Medical Center in San Francisco, Eilers' 57th birthday.The Bradys, Eilerses and Coolings met Thursday to compare notes and talk about …