My son has a 2014 TG, with 1200 miles. Idles at 900 - 1000 rpm after being ridden for awhile. At start up idles 1300 - 1400. He says it feels at times it might cut out. My 2013 stays fairly constant idle at 1300, 1400. He just picked it up after 1000 mile service and swears it wasn't a problem before service. Thoughts? Thanks in advance