My 09 Ss just turned 5,000 miles and is due in for routine maintenance. The bike has never run better and has had four oil changes, three by me with Amsoil. The last at 4,900 miles. I always change the engine and primary oil... And I have a new K&N air filter. Now heres my question. Do I spend the $350.00 to have it gone over at the dealer? Thanks Dave.