I think the brief pause you describe is very common, I think? I've never struggled with right/left, but I have to pause like that. That was my initial response

I think the brief pause you describe is very common, I think? I've never struggled with right/left, but I have to pause like that. That was my initial response to my wife - "can't you just do the 'L' trick with your hands?" It doesn't work for her. Nor does, "Well, you write with your right hand, so can't you just remember that is 'right'?" She just has a total mental block there. :)