I just got my bike back from honda because i got the engine rebuilt. I know they went .050 o.s. and now it has a really low idle. I turned the idle knab to raise the idle up and still find it is a little low. I think some of the problem might be because the spark plug is showing that the bike is lean. My question is the screw on the bottom of the carb, what direction do I turn it to richin it up. And is there another screw besides the black knab that controls the idle and where is it? Thanks for yall help with this.