I'm in the market for a new .40 power plant, the two engines I have now were given to me, (o.s. fx max .46, and an older enya t.v. .40), what are your preferences? I know I want bearing supported shaft, but what about ringed vs non-ringed? I know the break in for both is alittle diffrent, how does each handle a little dunk in the water ? all opinions are welcome. thanks