I have a 1981 super sport 170 with a 350k. The engine is all factory original. The carb was rebuilt because the needle and seat were bad. The carb was super clean and all idle circuits are clean and free of obstruction. I need to have the idle screws (fine threads) out 8-9 turns in order to stop fuel from dripping into the primary’s. Everything seems to run great, but after a long run it seems to get a little flooded yet and when I look in the primary’s at that time it has a very slight drip again. Any thoughts on what might be going on? I have verified the float level is good and the needle and seat are functioning.