If there is any difference in tax, even $132, you should file the amendment. It sounds like you're almost finished if you know the difference in tax, so you just need to print the return and mail it in.
In case you need the instructions, make the selections below and the results will give you instructions for the related year and type of TurboTax software you used (online or desktop). https://ttlc.intuit.com/replies/3288565
