I was also disappointed with my OP-1. After receiving a unit that had a broken OLED display, I received a replacement whose rotary encoder knobs were visibly askew. When I reached out about it, TE told me that it was "normal". I would expect tighter QA control on a product that is $1000+, but since it is made offshore in China, I guess they can only do so much?

https://i.imgur.com/7KrxVZr.jpg