Yep, I had mine installed prior to delivery by the dealership and unimpressed by how flimsy they are. Most of the movement in mine occurs at the 90 degree bend in the flat piece of steel at the lower end of the dresser bars that bolt to the bike.
Hi Crashpete
Don't know about the rear dresser bars..but I had front engine bars on my first Rocket and they were strong and well made.
I'm pretty sure Triumph changed the design and thickness..you may have the original design.
Someone will chime with more knowledge than me