The last 2 weekends that I used the boat we went out of Whittier. On the second day this weekend we started having runability problems. I have a 175hp sportjet. It would start with no problem and would jump out of the hole but would not run in mid range RPM. I had this same thing happen last year after visiting Whittier on the second trip. I changed the fuel/water seperator filter and the problem went away last year. I will do the same and see what happens. I hate to imply that the harbor has water in their gas but I was wondering if anyone has had any similar problem. Maybe I haven't changed the filter often enough?