Wallace, I had the same problem on my MS Loyal Tender. I first installed the rudder post a bit out of square, which resulted in excess force on the rudder shaft. I e-mailed Model Slipway, who quickly mailed me a new one (all the way over here in the US). But then I modified it using short pieces of brass tube and brass rod for better strength. I also remounted the white metal tapered bushing that glues to the hull, to make things straight. Check out the picture and PM me if you want to.