Inner Bud Leaf Looks A Little Burnt

Just entered week 5 of flowering and I just noticed on a couple of the bud sites that the inner part of the leaf looks a little burnt. The rest of the plant looks pretty healthy and very resinous

My setup is a 400watt HID and running hydroponic drip system. I keep my nutes around 1000ppm with GH base line, flora nectar, and the Yellow Bottle - Advanced Floriculture Bloom line (Roots, Organic Sweetener, Phat, and Ooze).

Any ideas?

I forgot to mention this is a Master x Bubba Kush strain. Thanks