So now more confusion.... I came up with part number 5004558 for my
fuel pump. That means it's a VRO pump? But my engine is 2cycle and I
mix my gas and oil 50/1. Is my fuel pump also mixing oil? That would
be news to me and I don't even know where the oil goes! Also, looks
like the new unit is $300, I'll give another week of test runs, it's
getting better every day, so maybe it'll work itself out.