[heloego]

I ordered the black rack from our host specifically because my tank bag is always mounted. The rack suction cups keep the rack from damaging the tank, and the bag mounted properly prevents the rack from moving around while the straps hold it in place on the rack.
  I have noted no damage to the tank from the bag straps.

[mattsz]

Then there's this: For years I saved the gas tank from the 305 Scrambler I center punched a car with in 1966. It had a perfect impression of my "boys" right where the accessory rack is located. Surely glad there were no RACK RODS involved to make a bad day worse.