I'm just asking for advice from anyone with a Honda on the prop installation.

Honda manual for the 225HP says to lightly tighten the castle nut by hand or wrench until the propeller has no free play. Then tighten the castle nut using a torque wrench. Castle nut tightening torque: 0.7 lbf-ft(1N m. 0.1 kgf m). The using the torque wrench tighten the castle nut until the first available groove in the castle nut aligns with the cotter pin hole. (HERE IS THE CONFUSING PART: TIGHTENING TORQUE LIMIT 33 lbf-ft (44N-m, 4.5 kgf-m) do not tighten the castle nut above the tightening torque limit)
Why is there such a big range?

The confusion is the same for the 9.9 Honda. The instructions are the same except for the lbf-ft which in this case are 2.89 lbf-ft(4N-m)
with a similar warning of TIGHTENING TORQUE LIMIT: 12 lbf-ft(17N-m)

I am one to follow the instructions of the manual but I've never seen a torque so low on a prop nor the range so extreme.