I'm not a fan of double wicking. Although many do it and do it quite successufully. A 3.5 to 4 " container can be wicked with a single wick. A Cd 12 or 14 should do it. But as always with wicks, you have to test, test, test.
I've tested a couple of scents in the new and improved CB Advanced. So far, I have poor scent throw. Has any one else had the chance to do a good eval of this wax. Either: The new CBA is a poor thrower or It must need a verrry long cure time