I am considering my first festool drill and I am a little confused by a comment that has come up more than once in this thread. The comment is that there is no offset chuck available for the CXS but I am looking at the 2017 catalog and they list a Fastfix Eccentric Chuck for the CXS and the TXS for $124 as part number 490294. It does not come with it but it does appear to be available. Am I missing something?