[Suther]

Look for load leveling shock rattle. There are literally hundreds of posts.

As it turns out, even with TSB no solution. The rattle/thumping comes back after several thousand miles.

I just how your spare is loos;-)

 

[Suther]

Yep, did that with mine; replaced the shocks four times. Third one with the shocks mentioned in the TSB (which came out later). Fourth replacement was after the TSB came out but with a newer version of the shocks then stated in the TSB. All the time the noise came back after several thousand miles. All new shocks have been quiet initially.

So, it looks like even the 14' have that problem. How can it be so difficult to get a shock quiet?

 

[Suther]

I started a poll some time ago (should be still around) and while you are right some experience the noise with regular shocks also.