Yes, I did. The gains are modest. If you have quality candles in supply or one of the long burning nu-wick type it really isn't neccessary. I did it with inexpensive emergency candles and got about a 20% increase burn time. Then I believed the package labeling about a high melting point and stowed one in the first version of my pocket tin. Pocket tin, Mk 2 quickly followed, sans candle<br><br>