SAP Crystal Report can't save my custom paper size

The company where I work create a lot of reports, these have to be printed on specific sized paper (in this case continuos paper), such as 20cm x 15cm, which a printer EPSON LX-300+II, however, the only way they can work with this paper size is if:
- I create the personalized paper size in print preferences
- I save the settings under a specific name on the print preferences
- I open page setup and select custom paper size

I did all these steps, only thing I can't do is SAP save my custom size.
I've one problem with this, the settings goes back to Letter (or any size except my custom size) every time I close print setting at the program.

This procedure is too complicated and too long for the user to do.

Any help would be greatly appreciated,
Regards,