Hi folks I'm new to the site. I'm thinking of buying a pair of mercury pro max 300x's. Has anyone heard any major problems or flaws with these engines? Do they have to be rebuilt every 30 hours like the mercury racing 2.5 's? Are they high maintenance ie blow power heads or lower units. Will be using them to go fast in a skater but mainly for pleasure.<br />Sincerely,<br />JJ
