Glad to see you using the scope Rebecca. Hope to see you at the Star-B-Q.
I went out about 10:30 last night to see Io transit Jupiter. The shaddow sat at about 7 o'clock (through my Dob reflector) below the Great Red Spot almost exactly in the middle of the two inner dark bans. They moved together through the evening like the shaddow was a permanent fixture of the planet. Transparency was good, and at times it was very good. I could easily make out definition of the dark bans and the storm. Best viewing I've had yet of the giant. It was very fun.
Happy Trails
Rick