Unless I’m wrong, I don’t think your meter base should float only supported by conduit.
I have to think that this was missed by multiple people: the electrician, the building inspector, and the power company.
Can anyone give me an excuse for any of these people not to catch this? Is was a recent remodel and the siding is pretty new. Would the power company just let this float while the siding was installed? (The answer to that is yes because I live in a small town where strange things are allowed every day, like the house with no plumbing vents except for three of the under-sink variety and they almost had city approval until I opened my big mouth. I want to here what would have happened in a stricter environment.)