Freddie,
Not sure what happened to chip's answer but I asked him to answer you question again.
Greg,
your question was how the Pass-Port was holding up to the 4 stroke motors.
I know that one of Marcelo's Pass-ports has the YS 170 in it. I have not heard of any problems. I hope
that he will see this and let us know how it is doing. Here is a pic of the YS 170 Pass-Port