You can find instructions for Palm wax here. Not sure who you get your wax from, but I'd check that for melt and pour temps http://www.candlewic.com/candle-making-newsletter/1004.asp I add 5% palm stearic and use spray mold release to treat my aluminum molds. Are you using wick pins? The only way I know of to change the wick for testing would be the use of wick pins and then don't wick the pillar very deep, maybe like 3 inches, test it for burn, and if it's not the right wick you might be able to pull it out and when cool stick in another one. Not sure, never tried it. LOL But it sounds like it might work.