Problem solved by accident

I recently installed a "auto pilot" from the default LEAR JET(FS2004) into another plane that did not have one. Only problem was when the AP was on, you could only change directions in 10's of degrees and altitude in 1000's of feet. No flying 015 at 2800 feet. Today I was going to change direction and as I put the mouse curror over the direction "spot", I accidently hit my mouse's center wheel and the direction changed by ONE degree and not by 10 degrees.... same thing on the altitude. Problem solved . Use the mouse's center wheel for single units. jerrycwo4