Recently purchased a Harman XXV. Having a custom hearth built and wondering how big the pad needs to be. It will be installed in the corner. My dealer said they usually use a 36", but that seems too small. Based on my measurements, the pad needs to be 48", but that is assuming I go with the Harman recommendation of 6.5" to each wall from the back corners of the stove. As far as performing maintenance goes, does anyone have recommendations for placing it farther from the wall, or should 6.5" be enough? If it helps, I am only 5'7" and athletic, so I would probably need less space the move around than most people. Obviously help from XXV owners would be great, but any input is certainly welcome.