When printing miter templates from Adobe Acrobat, it is important that you do not permit any type of scaling. The sample print dialog box below highlights the area to check. If a miter template does not wrap perfectly around the tube, do not use it. Check again to ensure that the template was not scaled in the printing process.
The actual dialog box you see will vary depending on which PDF reader you are using. Below is the Print dialog box for Adobe Reader X version 10.1.7