Common Issue:

Occasionally, Google Chrome will not pick up on your default receipt printer paper size settings and you will have to set it to the proper receipt paper size one time in the browser when printing.  

To do this in Chrome, you hit the "More Settings" button in the print preview and select the correct paper size. 

The below screenshot will allow for you to have a little more guidance:

Note: Ensure that "Headers and Footers" located above is not selected as it will cause printing issues such as shooting out 6 feet of paper per print.