From all of us at ATRAB... cut him! The more fit the horse gets the tighter the muscles which squeezes the testicle... as far as the other testicle... if he has stud potential keep it... if not cut it! A testicle cannot go up... the testicles desend upon formation.. yours just didn't drop... I wish I could get one cut for $500!! Do it and I'll bet he winks at you!!!