Possibly the rocket is hitting the supports at the beginning and it starts drifting to the side; you could try making the supports non-collide
I don’t think this is as likely, but maybe the center of mass on the rocket is slightly off center
I don’t know if it still exists, but there might be a constraint thingy that brings Attachment0 to Attachment1 and you could put Attachment1 on top/in front of the rocket
I seem to have fixed the problem by adding an Attachment into LaunchVFX (part at the bottom of the rocket), moving it up 2048 studs, then setting AlignOrientation Attachment1 to that