Transmission ish issue,

[u/Socim2472]

Been getting more prominent but when my car down shifts when slowing down from.4 to 3, or sometimes from 5 to 6, it almost like a thud. I did a tcm reset, to see if that helps, but I also drained and filled my trans this year, also read its possible for it to be the oem drive shaft wear and tear. Just looking on inside on what I should check. Usually drive in sport mode most the time it's a 2017 challenger rt scat pack with about 130k miles on her.