flin1981

Thanks a lot, proptop. I'll try what you say next time.
Like I said, that is a used one, so I am not quite sure about its history. It was quite dirty, looks old, should be fully broken in. Needle is set 3 turns open (factory setting), sometimes a quarter of a turn in. Didn't really see differences brought by needle setting.
Can you make it more detailed about what you said last? Leaner for colder weather, or richer? And what do you mean by "load up on the low end".