Uncollected Social Security and Medicare taxes on W2

My wages are included in W2 and federal taxes have been withheld. Due to some confusion regarding my residency status, Social Security and Medicare taxes were not withheld. My employer is not responding for requests to amend the W2. I would like to pay my share of uncollected social security and medicare taxes.

 

When I look at adding income via Less Common Income -> Miscellaneous Income, 1099-A, 1099-C... to include a form 8919, TurboTax also adds federal and state taxes for the amounts added this way. I would like to just pay additional Social Security and Medicare taxes but not incur additional federal and state taxes. How do I do this?