Originally Posted by Apex

What are the steering end points set to? And how much dual rate are you using? To completely get rid of the chatter, you could set the end points to the point right before the chattering. However, this will limit the amount of steering you may need to get around the track. The POM outdrives might help as well. You could also try the POM or TOP pin covers which allows the removal of the set screw from the CVD. Also, the chatter seems to be more prevalent on carpet and high bites surfaces.