I have some bottles of root beer sitting at home that I made last Saturday, so 6 days and they still aren't fully carbed up yet. After 3 days of no carbonation at all, I thought maybe the temp was wrong so I moved them to a stable 68 degree temp and that seems to have done it. They are carbing...
"as well as proper mixing of the priming solution without stirring and aerating the fermented beer"
Could you elaborate on what the proper method is? Or did you just mean put the corn sugar water in the bottom of the bottling bucket, siphon from fermenter bucket directly on top of the corn...