Have a 20hp 1985 that I got parts to do electric start.Something that I hadn’t seen info on was the timing adjustment screw.I ended up with two starter brackets.One from a 1977 35hp and the other from a 2003 25hp.I saw the 2003 starter bracket has the area for the timing adjustment screw notched out where as the 1977 is not.Is this normal from factory to have bracket notched out on the newer models? I know they have diffferent timing34* and 30*.