the new klim gtx boot is the way to go, but it sound's like a pretty simple answer to your problem.you need lighter boot's.. i don't wear anything heavier than 400 gram's till it get's down to zero or below, the boot's are to hot, and i get alot of heat of my footwell's on my 02 classic and 03 pro x .. a real good boot is the north face winter back packing boot 8" high 400 gram's water proof, great support and incrediable grip on the sole stiff but not like a race boot or snowboard boot.. i swearby them till it get's really cold..