I know this has been discussed in previous threads but I seem to be unable to find them. So feel free to answer with links to other topics.
My new M4O uni always pulls right, I’m unable to ride it upright unless the road is slightly tilted to the left. I know it’s not me because I ride the same routes on both my 27.5’’ and my 36’’ and I know pretty well where the road is tilted such that they pull right or left and it’s the same places with the two but not with the new M4O.
I checked whether the saddle is straight and I checked whether the wheel is centred (I didn’t measure it, though - it just looked centred). What else is there to check?