Forced to upgrade

[MasterZuFu]

My forum (http://www.slaveryreport.com) relies heavily on xthreads to perform its functions. I was using a highly customized theme for 1.6 version of mybb, and was forced to upgrade to 1.8, and it turns out the theme is not compatible with 1.8. So, I've had to upload a new theme and am trying to make it compatible with my previous xthreads fields. I'm not having much success.

Is there a simple solution for getting my previous templates to work with my current theme without totally screwing up my system?

Thank you!!

-ZuFu