I'm sure this has been mentioned, but I just want to be sure. When R2 and 3PO are taken by Jabba's employees, EV-9D9 orders 3PO be fitted with a restraining bolt. It never happens. I dunno if the order applies to both droids, but there you have it.
Oh yeah, when Luke jumps from the Skiff's plank, he extends only one hand and then all of a sudden both hands grab the plank. Perhaps a little editing savvy can be used there?