sanding blocks and small files.
Sometims it's just quicker to post process a print than spend a few days messign about to get it exactly right.

That said, sounds like the printer needs a fettle anyway :-)

Do you have a print area cooling fan ?
With small things like vertical pins a couple mm diameter, you do need to get them cooled and set pretty quick. even at 30mm/s once it's just on the pins, it comes back for the next layer before the previous one is fully set.

One thing to try is to have a tall cube or column next to the print to give the layers a little longer to set and cool.