Just purchased a new 2014 Outlander 500 DPS in the fall of 2014. Finally put 10 hours on the bike, and my dealer wants me to bring it in for the 10 hour service; however they told me it was going to cost $800 and an additional $50 for a new air filter. Is this normally what the dealers charge for the service or am I being ripped off? Is the valve adjustment really necessary? Also what maintenance is recommended if I was going to do the service myself?