Rock - DwarF - Hard Place
To answer you flatly, no it didn't make the "same" racket. But if I let it move just a tad, it did make the same racket, only like a little knock, not a full on power knock *by a tad,I mean > 1 mph*. Maybe if you told me what a flexplate was, I could look to see for sure. are you talking about the undercarriage rock-guard for the transfer case that bolts onto the frame crossmember?
Don't take life to seriously, nobody gets out alive.