To Paul McBride: I just received my copy of GANews and, as usual, your column was one of the first for me to read (What to do about a “slightly” rough running engine, Jan. 25 issue). I think Joe Casey has a carburetor venturi problem. There was an AD on some O-320s and his may be one of them. I strongly recommend he has it checked before his next flight. The symptoms he described are sure the way an O-320 acts when it has this problem.
Keep up the good work.