Reo's are outstanding machines and you got a great deal.
Will last a lifetime with minimum care and 6V changes everything. You'll notice flavors that you didn't before. Congratulations and enjoy the heck out of it. Guarantee it won't be your last one. I only use 3.7V when I drip sweet juices at night now and I have a dedicated Reo Mini Woodvil with a 306LR and a pyrex tip just for that. What's neat for drippers is if you leave the bottle empty, it will slowly fill us with
juice if you overfill the atty so you don't lose any juice