Recently flashed to the 5.19 update in my 2016 w/ G56 4wd IT has been a while since I updated so I know there's several updates in that Flash. But I noticed a hard slam when letting off the pedal only while at half spool or higher...doesn't seem to be affected by changing individual settings. seems like the slam feeling is coming from the front end. no clank or banging sound. I cannot find any obvious mechanical fail. pulled the driveline and the joints look good. May just replace them as I'm at 100k now and it will rule that out. Any body have this issue? Tips?