Well, I'm starting to restore a 1961 Johnson Seahorse. It's an 18HP model FD-15. I am in the process of rebuilding the carb and I need a part to complete it. It is part number 0306141 and it is a type of sleeve nut that the low speed adjusting needle goes through and into the seat in the carb. If anyone has one or knows where I can find it, please let me know. I can use a different type of part to get it working but I'm trying to keep this original otherwise I would have to change quite a few thing to make it work. Thanks in advance