hey, pardon me if you already have it/have heard of it/whatever but Dave McLeod published a book last year called 9 out of 10 climbers Make the Same Mistakes and it's a lot about busting up plateaus like that. http://www.amazon.com/out-climbers-m.../dp/095642810X i haven't read it myself but it might help you if you're feeling a bit progress-limited.
i wish i could offer more advice... i'm like a 5.7 climber wishing i had the strength:weight ratio to kick ass like you. but pbf is definitely helping!
I'll check the 8a site. I've found weighted pull ups, weighted chin ups and one legged box squats have increased my climbing strength. But the best help of all was dropping weight, it increased my grade without even thinking about technique.
I started indoor climbing a little over a week ago and I'm having fun with it. I can do 5.8s
You lousy kids! Get off my savannah!