If all that was wrong with it was the missing shift shaft seal, then yes, I wouldn't get online and whine about it. It can be installed in 5 minutes easily. No biggy. Everybody makes mistakes..except the OP and yourself I guess.
39s rock on a Serval. If you can afford 100LL or racegas, you can go a little more aggressive on the porting and still keep (or gain) bottom and midrange.