Our poptop closing procedure has been refined over years of messing around
with various poptops.  I hope it works for you.  Zip up all screens.  Slowly
lower poptop.  Let the top come to rest on the top of your head - anyone of
average height should be OK.  Grasp the fabric sides and roll them up snug.
Bend your knees to lower the poptop the rest of the way making sure that none
of the canvas gets pinched in the mechanism and lock in place.  Using this
procedure we've never had any canvas left sticking out the sides or binding
inside.
Greg & Val
86.5 Camper Syncro WLE