Input Shaper and Belt Tension Results VC4 400mm.

Been getting these type of results no matter what I have tried. I don't have a belt tension meter yet but will result to it soon if I cannot find another option. I am currently using it as is, just obviously a lot slower with good results. I love this machine and would like to move on to the next step of the hybrid system and then maybe the idex if the problems clear up. For now I am trying to get perfect results via input shaper before moving on to the next step. Looking for ideas and or similar results and what you have tried. I have an idea of the culprit but we all know its not just one thing and could be a number of things. I'm gonna tear down the hot-end soon and re assemble it hoping that's the culprit. Any suggestions or ideas will be appreciated , thank you in advance!
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