Yes, if the MP is too much for the wicks to handle, they drown out. I think(LOL)! But, if you can find the proper larger set of two wicks, they can handle the deep MP & do their job correctly without making the jar too hot. You have to go all the way to the bottom to find this out. Dblwicking is the pits for me. I'll get more then halfway, it's a thing of beauty & then kaput, drowning! It could also be the type of jar & lack of air. I try to only dblwick jars that are close to 4" wide, because of the heat from 2 wicks.