Lethal Mid Pipes

[Big Dummy]

Guys, I have a question about the flex coupling in my mid pipes.. have the lethal set and have had them on for over a year and no issue with them. My question is how much “Flex” should they have? I can grab either pipe and they do not flex. The original ford flex pipes would move a good bit and they broke so that’s why I installed the lethal set. I guess if anyone has these or a set with the woven or braided steel type could just grab the pipe and see how much it moves? I have a slight vibration in the pedals, seat and steering wheel that has not been identified yet, two techs checked it again today and have found nothing so I am wondering if the vibration is exhaust pulsing and having very ridged exhaust piping. Picture of flex coupling for reference.

 

[UNBROKEN]

They should be pretty firm. It’s a vibration dampener more than a flex joint.