Build quality fine.  Instructions don’t address what to do with the straight pole.  They don’t even show it.  Union between straight pole and handle pole has no fasteners and is wobbly.  Really have to crank down the knobs so it doesn’t wobble and I’m concerned the tube walls will get crushed over time.

No obvious way to adjust the height.  Building it to look like the photos means zero height adjustment… that puts it fixed at the tallest height.  All I can figure is to remove the straight pole and slide the handle pole lower and crank down the knobs hard.  But that is suspending it by the upper knobs, no longer reaching the bottom knob.  Instruction (pictures only) do not address height adjustment