Well I know there is a main needle, and I also know there is an idle screw(is that low end?). And then there is another needle on the side that I keep flush with the block. I mainly just move the main needle, and I keep the idle screw about 1mm closed. Would I need to adjust this needle?
And that one that is flush with the block, whats that do? I'm not sure if you know what I'm talking about though.