Just looked at the Grigri, its rated for 8.9mm-11mm, and the ascender is rated for 8mm-13mm. 5/16=8mm, 3/8=9.5. I just night run the main and jib halyards at 3/8 and my spin halyards at 5/16. Thoughts?
SWG, in your pictures of your halyards is the ball on just your spin halyards?