yeah, i agree on that now that i have a centering bearing in there. response is perfect now
Glad you got it worked out, that can be frustrating.
I did the same as you and swapped out an NSK CT with my latest OD, and both yo-yos play better now. I swapped it out of an Edge 1.5 that was super vibey. For some reason the OD flat makes it play much smoother, and it plays just fine with the flat, but I get much better spin time with the NSK CT in my new Küntosh 5KQV.
Could be because I’m so used to the Edge that I’m just more precise with it and spend less time making adjustments so less time with the string touching the yo-yo… but whatever, not gonna question something that works.