Well today I had to get my 2008 CSC trike inspected and I asked my friend the mechanic to check the drive shaft after reading some of the posts on this site. Well as you may have guessed it is starting to go bad, its not real bad yet, however it would have gone in the near future. Fortunately it is still under warranty which will save me several hundred dollars. He took it apart, cleaned it up and re-packed it with grease. This winter we will get the new drive shaft and spline from CSC and before we install it we are going to have a machine shop drill it out and have 4 grease fitting installed. That way I can grease it when I do my oil change service. We are hoping this will make a difference and it should last for a 100,000 miles or more.