I just pulled my 2012 RXT out for the summer. Got on the water and it ran rough, wouldnt go over 6k RPM. Added 8 gallons of fresh fuel with Heet additive. Changed plugs: plug 1 and 3 had wet oil on them and were fouled black; plug 2 was nice and dry and tan. What could cause this? Any help is greatly appreciated before I get robbed at dealership. FYI when I put it up last year for the winter it was running top notch. I did not fog the cylinders but did run out excess water before storing.