RE: brakes???
brakes wre used in early pattern ships hooked to work with full down elevator as the brake was on the nose wheel only.the brakes were needed for paved surfaces as back then the carburaters in use would not idle well below 3k rpm.only way to stop the plane on pavement.i used a sonic systems brake on my ducted fan cougar to allow the engine to come up to full power before starting the take off roll.really do not need them on a p-38 but that is your choice