does soapstone retain heat like they say it does? and if so, can you buy a slab or bricks to place on top of a stove to help distribute heat? i've heard good things but wanted to ask first before i jump into anything. as a side note, my firewood guy brought me more wood today. got a full cord and half of it was hedge apple. he's got 4 more cords just like it. gonna be a warm winter. woo hoo!