OK, well my is far from stock, but lets see...

I don't use the foamy stock blades (I run cut-down Gaui EP200 plastic blades & CF), but general rule with micro & nano sized helis states: they should be snug enough in the blade grips not to move freely, but not so loose that they fall. I set them so when I hold the heli 90 degrees to the side they stay, if I shake the heli they both slip about the same amount without colapsing in.
Also I'm running double BL motors, so my wiring will differ. The plug that goes into the battery will be a walkera 2 pole male micro connector, I believe it comes out of the 4in1 in the lower righthand side. On mine you'll notice 2 sets of wires wrapped with electrical tape (that the BL ESC & Flea BL tail ESC tied together). First pic is of stock 4in1 with BL main, second is of DBL BL set-up.

Shadow