OK, I'm game.  What are you having trouble with?

There were actually a few things that I had to modify.  I am not sure where you are starting from.  I had a jDrones hexacopter kit (full electronics).  Crashed that and it was toast from a mechanical standpoint.  Cheap piece of crap if you ask me.  I have 880KV motors and 10X4.7 blades.  Get the better blades, much tougher and better balanced out of the box.  The electronics fiberglass plates didn't line up well and as you noticed the power distribution board had to be modified with four holes to attach that.

Since that time I crashed the copter twice and had to rebuild.  I lost a prop and fell from 50 feet on its head, broke two arms and fractured some carbon fiber.  I decided to buy an additional xAirplane kit just for spare parts.  That worked out pretty well for me as I am still learning to fly.

Also, I really like the idea of the open source development of the Arduino controll mechanism and the expandability of such, but I have had some pretty hairy experiences with getting it to work in a manner that I am not in fear every time it goes up.  I decided to get a Naza controller and will get that in the next couple days.  The arducopter thing is just a little to developmental at this stage for me.  they will get it sorted out eventually (I think) and I will go back to it.  I may build a smaller quad with the Arducopter controls in the time being, haven't decided. 

My goal is to be able to take it out and do some video, possibly hook up FPV once I am comfortable that this new controller will work well.  I practice with a Blade MQX and I am getting pretty comfortable with it, but I still have massive trepidation when I send the big bird up.  It truely could kill somebody.....not good.  So, it needs a trustworthy control for me.

Did you get your takeoff problem fixed?