Rattle with Yuba adjustable monkey bars

[TimmyTwo]

Hey Yuba owners!
I’m using the adjustable monkey bars on my non-Yuba cargo bike. They have a pretty intense rattle where the long bars meet the end supports (the 90-degree joints). Tightening and adjustments don’t seem to help. Anyone encountered this and found a good solution?
Thanks!

 

[PedalUma]

Can you undo the hex screw and see if there is a loose washer inside? When you reattach it use some gasket sealent or plumbers tape. Rattles drive me nuts. I eliminated one on this Boda Boda bike that I made electric today. It is getting this bell.