You've graduated to a bigger gauge. Unfortunately this means you can't put it in the same way. Get some tools!
Another common problem is inserting and removing large gauge captive bead rings and segment rings. Once you get rings that are around 8 or 6 gauge you physically won't be able to get them in and out without tools (unless the jewelry is spring loaded). Its kind of difficult the 1st few times but with a little practice you will be throwing those rings in and out in no time.