I filed my taxes incorrectly. I forgot to include some income. I ammended it and i owe the IRS. I can only mail the ammended form and pay via check. I live abroad at the moment but i am moving home in 2 weeks. I do have a check available but it's dirty and damaged. It is in tact but it has stains on it. Should i send my ammended form ASAP or should i wait until i can get respectable checks and mail it then? Is there a deadline to when I should mail an ammended form if I owe the IRS?