This problem seems minor compared to others on your site, but it is driving me nuts. This season, my '08 Dyna Superglide has developed a nasty clunk that seems to come from the gas tank, whenever I go over a bump, manhole cover, or pot-hole. This is its second riding season, and I have about 5200 miles on it. At first, I thought it might actually be inside the tank, like the fuel pump, but I can't rule out the instrument console either. I have had that off a couple of times, but have not found anything loose.