Need to extend column, how, or replace completely? *pictures*

[Yrrol]

Replaced a bad pillar on the utility building. I copied the old one's measurements.

Now that everything is set up, the other pillar is a bit short. I believe it's damaged at the bottom and has shrunk in length. You can see on the other parts that this is the case.

Unfortunately, it's not just a matter of measuring to determine what's right and wrong since there's poor precision throughout the building.

So what I am thinking is:

• Add shims at the top to fill the gaps. Feels a bit unprofessional.
• Saw off a piece from the bottom against the foundation and add a thicker shim there. Perhaps pressure-treated?
• Replace the entire pillar with a new one there as well, but these are so damn expensive and probably of poorer quality than the good old pillars.
• Shorten the new pillar with the risk that the building leans. Something I haven't found a suitable measuring point to investigate.

at the top where it's missing about 2.5cm


The condition at the bottom


the whole setup