I can feel it more on base of the unit and not the pipes.
Direct measurement with the accelerometer also shows similar, it’s a magnitude lower on the pipes after the flexis, but still transmitted through the base. My pipe arrangement is very simple though, hardly any is exposed outside.
I found I couldn’t hear anything below about 10 on the arbitrary value of magnitudes on the acceleration FFT, and problematic resonance was anything above 100.
Quite easy to track these down once you can see them on the phone, adding mass can isolate each thing one part at a time and you can quickly get a sense of what’s going on.
Hope that makes sense!
