I have a 2017 Springfield. The original owner put the sissy bar with back pad and a rear rack on it. My bags are about 2/3 full with stuff like an air pump, first aid kit, rainsuits, tinted face shields, etc., so I was looking at sissy bar bags for a weekend getaway with my wife. The manuals says the weight limit on the rear rack is 5 pounds. That won't carry much of anything. Is that a typo?