I don't think it would be a good idea to lighten them.
First of all, if Husky thought they could be lighter I'm sure they would have done it for you.
Second, if one of them were to break while you are riding you could have a bad crash. Not good.:eek:
On a related note; I knew a guy who took just a "little" off the threaded end of his front axel so that he could install a speedo drive on a MX bike. First enduro with his modification he was about five miles into the event crossing a high speed pasture when the axel snapped. :( He lived but you don't want to dublicate his actions.