Hello Dwayne, the needle on that plane is rotated front to back. It doesn't take much to find the sweet spot. There probably was a sticker on the wing that told you which way to turn for slow or fast. I own one myself but most of the stickers have come off due to fuel. I found it to be quite strange when I first started it. You will know though when your too rich, the engine will spew fuel out. Its unlike a Cox where you screw in or out . It only moves in or out very little.  Ken