I have a 2001 Wellcraft 290 Coastal with twin 225 merc optimax. When i first got the boat 7 month ago it came with two 19's after a couple of month one of them spun the dealer didnt have another 19 so they put on a 17 and later on replaced the other 19 with a 17 since going to the two 17's i have noticed i have been using more fuel. What props would be best on this boat? Also I am a first time mercury owner and do not have much confidence in the dealer because of poor service.What is a good place to go to learn about these opti max engines. <br /><br />Thanks, JP