Howdy, and thank you for your great questions! We'd suggest cleaning as much of the comb as possible, as wacky shaped comb can be a messy start for bees to festoon and draw new comb from. You can possibly create cross-combing or wavy comb from the start. Leave as much of the propolis as possible as this substance will give your next bees a really good start to the season! We'd avoid using a heat torch to uniformly melt the wax, as there would be a high chance of simply burning the wax, or simply the bars themselves.