Esc's won't hold calibration. Help me

Hey guys! I am building a quad copter using the apm 2 and I have everything wired up and now I'm almost ready for the first flight. My issue is when I calibrate the esc's they work fine and then once I turn it off and then back on all but one esc are

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Did I wire this wrong? Please help. Only 2 props turning

Hey guys! I am building a custom quad copter using the APM 2.5 system and thought I could build my own power distribution set up and I thought it was good until I powered it up today for the first time and only 2 of the motors will turn. I was able t

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