To improve capacity for this years trip, I am considering removing the side BMW aluminum panniers and securing a drybag in there place. However, there is not much gap between the aluminum panniers and, possibly, a mounted drybag on the left side, near the muffler. How much heat does the muffler add to the aluminum pannier? Would a drybag melt with its close proximity to the muffler? When packing the aluminum panniers, should the mufflers heat be a consideration?