Retirement tax questions

@macuser_22 

 

I am going to exactly use the method you described, so my question is can I deduct the amount that I've received (excess 401k) by check from my W2 box 12? 

I have only my original w2. In the case can I deduct that amount from box 12 (401K) while I keep box 1 the same and just use the method you mentioned to pay my taxes and filing?