Any way to get old school USB Mass storage back? I tried 3 apps, none worked(LG L70) topic

Ok so I was using a Droid X from 2011 till this November. I finally got a new phone, LG L70. It is a nice upgrade from what I had, much faster.
However the MTP mode leaves a lot lacking namely I cannot access my SD card from most applications only from windows explorer. I miss my phone being assigned a drive letter.
I have tried a few apps that claim they bring back USB mass storage mode but they do not. One ever required a reboot and it did nothing.

Any help?

Thanks :)