It’s really hard to get a Christmas tree to stand up straight in the stand on the first try. You need a partner. One person should drop the trunk into the stand as upright as possible and hold it, while the second person screws the eye bolts in underneath. Tighten each bolt a little bit a time. Once the tree is stable enough, the first person should then stand away from the tree and direct the bolt tightening. If the tree is leaning in one direction, the bolt on the opposite side should be tightened to straighten it up. It requires a little bit of trial and error, but with that method, you’ll eventually have success.