I bought an 07 leftover. The dealer reflashed it . I took it riding it fouled 8 plugs in 30 miles. I took it back they told me it was caused by the oil in the tank and all i could buy was NGK plugs. I got it back with Chanpion plugs, it fouled one idling the next morning. I changed it and rode it two days without problem.. I started it one week later and fouled another wilre idling. PTO side everytime... I took it back again Questioning the oil pump.. they told me the octain was too high93 intsead they said to usa 87. they also said the olug gap was the problem.. I,m picking it up again tomarrow. should I believe them or go to another dealer. I,m getting sick of taking it back.. 1 hour drive each way.. Any one got any ideas whats wrong with it?