I had a guy that played for the Vikings once, never a star or starter mind you, explain it to me as follows: It's like writing with your right hand your entire life and suddenly you're asked to write proficiently with your left hand. That always made a little sense to me, especially being an LT your feet and hands have to be quick and with strength as many of the best DEs are trying to speed rush and get around you. You simply have to be very quick with your left first step and arm/hand to get a paw on those guys to disrupt what they're trying to do. Once you've got it down on the left and right sides and know you can do it, it's just a mind shift. But since Richmond was a RS last year, he is anchored at LT this year, to me that is the staff indicating he was always going to be our LT and nothing else which means he has the athletic tools to do it, just needed strength and experience transitioning.