PDF export limitations: Draftsight exports PDFs with garbled text

Hi all, this issue is a persistent one - regardless of the file. My system does not have Adobe Acrobat, but rather a freeware PDF viewer. If the 'PDF' option is used for exports, the file has garbled text for every instance of text on the sheet. I have to use the 'Microsoft Print to PDF' Option but I'm limited to an A3 sheet size. This hasn't hampered my work thus far but now I need to print A1 sheet sizes. Moreover certain Text Styles I received from consultants print fine (this has a .shx format font) so it seems the issue may lie in the Styles. Any advice on how to use or set-up non- .shx format fonts (i.e. regular Windows fonts) so that the text won't end up scrambled in the PDF Export?