Replacement Post for Walking Brain

This model is only the central post piece of the walking brain. When I printed the model, the post in the center that holds it together was quite weak. I don't think the layer adhesion was great because there was so much time between layers for this part, as the extruder would go work on the other pieces between layers, mine ended up breaking in two places.

I printed this with 20% infill instead of 15, when just printing the post layer adhesion was much better, although the tolerance is tight, and I did have to hammer mine in. I haven't been able to get mine to walk yet, not sure if that is because of this post, or the original post mentions it is finicky.