Tip-outs should not be included in your W-2 amount. Generally you should be reporting tips to your employer and ONLY reporting the amounts that you keep. ( Gross Tips Less Tip Out. ) Are you saying that your employer takes your tip-out, but includes your gross tips on your W-2? What about the other employees that receive your tip-outs? If they are also showing allocated tips on their W-2 equal to tip-outs, than your employer is filing incorrect W-2s.
If your employer is pulling your tip-outs from your reported tips, they have to reduce your tip income by that amount. If they are not, you need to tell them to give you a corrected W-2. You also need to keep records of your take home tips and contact the IRS concerning your incorrect W-2.
You can not change your W-2 but you could claim this discrepancy on schedule A IF you qualify to Itemize. (you may not). Here is an IRS website with a LOT of good information and additional links.
IRS
Tips on Tips
