Coming from a different background

Greetings everyone! I have a background in forensic drug analysis, however I am looking to move into the digital forensic field. I have taken classes through Guidance Software and am working on my EnCE. I hold a security clearance and have testified in Juvenile, District, and Circuit Courts. But I'm still having some trouble getting to an initial interview. I'm thinking about looking into more classes including something like A+ and possibly a certification through a community college or online school. Does anyone have any other thoughts? I feel as though I have benefited from my current work due to the need for detailed notes and reports and the understanding of the rules of evidence. I'm just hoping to make the jump!