Show pigs born on January 18th and 22nd. Pigs are nicely defined and currently feeding on Kent Pre-game (22% protein, 1.4 % Lysine). Current weight at roughly 55-60 lbs. Show is in 119 days, would moving to Kent Launch (20% protein, 1.4% Lysine) be recommended and why?

Yes I would drop down the protein. Feeding to much protein can cause them the start getting outside their skeleton and also they can tighten up. Depending on how much muscle you may consider dropping to a 18% or 16%.