your english is much beter than my spanish or portuguese!;)

He didnt told me anythign about the price of gelding and half-gelding...:D

Actually, what he told me is that it is not necessary to cut both off.

We are not planning (and his race record doesnt allow too) to use him as a stallion. But the vet told me that it is not necessary to cut both testicles, since the problem that reflects on his racing performance will be eliminated simple cutting one of them.

JMO, but they do that to Paso Finos routinely and it is not a good thing. It enables the stallion to behave like a stud and you may find that actually gelding him may help him to focus a bit more.

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!!!:D