Yes that a piece of veneer had to glue to side of neck pocket. The neck alignment in my kit was off. I couldn't relocate the bridge as it was a semi Hollowbody kit with a very small centre piece. @fender3x have me this idea to whack the neck from bass side to see if there is a play and if a small wedge opens up. And there was a small wedge. I had to shove in some veneer one by one and mark it as far as it can go into neck pocket and check the alignment. And it did align well after that. Then I had to take the neck out and glue those veneer to side of neck pocket until the markings on top of each. Now all is well.
This forum is full of beautiful people who help people like me without any wood working skills to make their first guitars