APM 2.8 Arducopter - Simon 30 Amp Escs very hot!! - Wont arm - Help!

Hi Guys - my deepest apologies if this is both obvious and an old problem but its new to me and I need help.

I have been flying my Phantom 3 for a while but thought I would venture ito the DIY drone so...

I have assembled a flamewheel clone frame with

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