<span style="font-family: Comic Sans MS">couldn't find a forum for engines, so i thought i would post here. i have a friend selling a magnum .70 4-stroke motor and was curious how much more maintenance there is for them over a 2-stroke. i don't know a lot about 2-strokes other than getting them running good after breaking them in, and the thought of maintaining the 4-strokes as far as the valve lashing and all the other things with them make me shy away from them. are they that bad? what's the difference with the break in and tuning?</span>