Conversion not possible

I make it short of rebuilding in my Ford Mondeo MK3 car key was not possible because man the transmitter can not take from the original key !!! In addition, the assembly instructions are so complicated, the man the key never gets together (I've tried).

Here it's all about the conversion instructions.
And also partly false or missing steps, for example at the beginning is '' Pry the housing '', it is screwed which finds man still out quickly but then, after having inserted the electronics (the man is not completely out of the old can take key) and I quote:
'' Step 4) metal beard in new shell set (open position) push button in metal beard insert and put spring in the button (with the outward facing end up). ''
All right right? Ehh northeast eg What is a metal beard? How should I put the pen into the button when he already in metal beard is (Hab then things single pair of interpretations but the front and back will no longer fit together pity He worked so well in the beginning).

Well long story short stay away ehh lands only in the trash !!
Have a nice day to you all yet.