I finally yanked my ROPs a few days ago. Thought I could teach myself to work with it on but I guess you can't teach and old dog new tricks. First half a dozen times I started it cold when it was brand new I got smoke. Haven't had it since. Make sure your not overfilled on your oil. I changed the oil at 6.9 hrs with dino Mobile One racing 10w-30 with zinc and plan on switching to synthetic after 50 hrs. My 1000 plus hr EFI Kohler seemed to do this after switching to synthetic. It may only happen about 3-6 times a season know but man is it embarrassing. Looks like someone started a fire on my trailer and sticks to be all.