I have a 2006 1800 C with approximately 43,000 miles. To the best of my knowledge, there has never been a valve adjustment performed on the bike. Is this something I should look into ASAP or employ the old model if it ain't broke don't fix it? The bike runs fine but I don't want to have to find myself having a catastrophic breakdown due to not doing this. Another thing worth noting is I would have to find a shop to do this because I don't have the tools nor am I mechanically inclined enough to perform such a job.