Did i miss something in any of the posts here?

Can't you just loosen the drumkey-toggle/screw[s] on either side of your extension bar & "pull them in" [within the outside bar-housing] to make it shorter? You should NEVER have to saw/chop/cut anything...or am i just unfamiliar w the 9000?...I still have my 5000+ from the mid/late 90's...the extension "bar" consists of two smaller bars that extend out from within either side of the main [outside] bar-housing, which is "hollowed"...