I have a 65hp merc w/ power trim. I need some tips on whats the best way to have it trimed. Is it just a play around and see what works best, or is there a science to it? My problem is its not planing out. Well it will after a while. I changed the plugs. I am thinking it might be a carb problem but i wanted to get some tips on trimming it b4 i take the carb in to get looked at. Thanks in advance for any advise/help Jason Sorry guy/gals I found a pretty good article online after about 7 different google searches http://www.boats.com/news-reviews/article/keeping-trim if anyone has anything else to add I'm all ears.