The high end is a no brainer, problems are usually with the low. When you think you have it, let the engine idle, then pinch the line or remove it until the engine quits. If the rpms increase as the engine quits. Low end is to rich. If the rpms just go down and quit, low end to lean. I set mine for a very slight increase.

You need to have a system that shows you that the adjustments you made took effect and this is it. It could take a coupl e tanks fulls to nail it but after that, I run mine all season without messing with the low end