🚀 go-pugleaf

I tried to ask this in the forum but i somehow forgot the proper way
to open a thread for a new question

This is my problem:
I know, the right way is to go through a hole in the wall of the
cathedral after manteling up a beam in the cathedral (I never tried to
do this directly in the bell tower like some experts obviously
managed)

i was standing near the altar and shot a rope-arrow up into the 1st
beam near the hole in the wall .Then tried the normal thing (since
last Friday):
key "jump" and key "forward" simultaneously with an endless amount of
variations of :
-entry point of the arrow
-direction of the jump
- marginal time-delays of "jump" and "forward"/"fast forward" (+ and
-)
-view-direction (up,straight)

I also tried to jump directly into the hole in the wall

I keep falling down.

I know - the correct method may be hard to explain, but please
-anybody- try!
This seems to be the ultimate showstopper for me for an otherwise
really beautiful mission. sob...

Thanks for an answer