I am attempting to make candles in the sugar/cheese shaker tall containers.. They are 5.5 inches tall and 2.5 inches wide.. I made some bakery scents, hot apple pie, baked berry cobbler, spiced oranges etc. Some of the containers have the black soot? I am using ig1945 container wax with 1 oz pp oil and 44z wicks.. Could some of the soot be due to the height of the container? I am keeping them trimmed every couple hours and mine didnt seem to bad but a friend was testing burning the apple and the container came back filthy, however she burns them all day long... Is some soot strictly a sign of a bad candle or possibly incorrect burning techniques??? Any suggestions?? Thanks Tracy