harley davidson spark plug question?

Actually the plug gap on a Twin Cam Harley is .040 not .028.In the book it calls for .038-.043 but i just do them at .040
 
Actually the plug gap on a Twin Cam Harley is .040 not .028.In the book it calls for .038-.043 but i just do them at .040
 
Actually the plug gap on a Twin Cam Harley is .040 not .028.In the book it calls for .038-.043 but i just do them at .040
 
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