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Ricky, the .net site appears to be penalized, go to google and type in akinsseptic.net - results show for the .com site.  Also, if you simply type in akinsseptic in google you get neither site. This is an indication of trademark suppression AKA Google penalty. Your first step would be to unwind the penalty, until the sites are cleaned up you won't get rankings unfortunately. I definitely believe that domain name age plays a large part in rankings out of the gate.  I have heard that it is better to let Google find your site on it's own (from following links on the web) rather then submitting your URL to Google, because if you submit it Google they start the clock from when you submitted it. I have not tested this but since it's possible I never submit new sites to Google URL submit tool.

Could you not use the 'canonical tag' and link it back to a page which gets the largest volume of traffic? Ref:http://www.google.com/support/webmasters/bin/answer.py?answer=139394