I got the "new'" updated F75 today which has only been out for a couple weeks. The default setting in Disc is 10. I thought the new software was suppose to have Disc default set at 15 ? Without an "older" F75 to compare to, how can I be sure I have the latest version. I know thy are suppose to have seals and a better handle grip. Are these changes obvious? The manual that came with it was copyrighted June 28,2007