Rudder upgrade for MC X-30 - is it worth it?

The steering on my 2003 x-30 has always been heavy but it is getting worse. The steering is harder to the left than the right and only when driving. I only relly noticed how hard it was after I had driven my buddy's malibu. I lubed the cable and rudder port but that didn't help. I ordered a new cable and hopefully that will help, but in my research discovered changing the rudder to the 2006 style is supposed to make the steering much better. I'm looking for feedback from anyone who has upgaded their rudder. Thanks.