12 hours???...LOL...I've never let anything dry for 12 hours. I'm not that patient.
When I clean an atty with alcohol (Everclear), I just blow it out good and drip on some fresh juice. After a few priming puffs the alcohol will evaporate out anyway. If I do the Coke soak, I flush out the Coke with water, then flush out the water with alcohol and proceed as above. If I had to wait 12 hours, I'd just throw the thing away and get a new one. But that's just me.
TT33