For me, the jury is out on the question of the benefits/drawbacks of engine braking. For two strokes, it's probably not a good thing, since with the throttle closed, you have no lubrication being provided via the fuel/oil mix. With a four stroke, however,this is not a problem since the lubrication is not being delivered via the fuel. In fact, some feel that it may even be beneficial, since the closed throttle provides the highest vacuum, thereby tending to suck ambient oil in, providing a bit of extra lubrication. This is assuming, of course that you don't have double freewheels. - Just some food for thought.