Originally Posted by
Steve_sr
Here is a better photo with the clamp tightened to 5nm. Without the clamp the sides of the slot are parallel:
Looking at and extending the sides of the slot, I estimate that the tube is nearly closed on itself at the top.
This wouldn't pass muster on $100 dollar department store bike.
BTW - if this bike is ever taken out in weather the loose post and rear facing slot would pretty much guaranty water in the BB.