Well it was time to do my pan and filter and I thought since I have had some harsher shifting and downshift clunk happening for some time (diff fluid solved it temporarily but it returned) I might as well fix what I can while it is open. I bought the sonnax zip kit for the zf8hp70. And the pan and filter. And a new valve body separator plate. I had my mechanic do the work. He was hesitant as trannys are not his thing but I walked through the sonnax instructions with him and he did it. Just got it back and the transmission may be smoother than when I bought the car. It is way smoother all around than it was a week ago. But all my issues are gone now. https://www.sonnax.com/parts/4590-zip-kit essentially the kit replaces the high wear valves with ones that have o rings on them instead of metal on metal. Pretty smart and easy solution. And not too pricey. I did not replace any solenoids because none were throwing codes or anything. I didn’t take it to a transmission specific place because I thought they would have tried to up sell me on a full rebuild or something. Regardless I had not heard of the sonnax products here so I thought I would share.