Hi, I need to replace the power transformer in an OSCar. The original has dual 9V secondary output s however the middle 2 taps are tied to ground so is there any reason I couldn't replace it with an 18V center-tapped? PS schem on pages 5-6 here - http://elektron-users.com/index.php?option=com_docman&task=doc_download&gid=415&Itemid=30 Thanks, Doug