5th Wheel Makes Loud Clunking at Stops and Starts

If you are sure everything is proper, then you can take the do nothing and ignore it option. I just have a "bar" 5th wheel, no jaws. Simple, almost impossible to break, no parts to wear in my lifetime. Some clunking is to be expected.

However, I only drove tractor trailers before the camper, and commonly had partial loads in tube trailers. So, I sometimes had a lively ride while sitting at a stoplight. Your taste my not accept what I take for granted.