burning leaves

I am growing with cfls its going pretty good I have 2 that are flowering now, my plants always seem to grow into the bulbs and burn themselves, I like having the light as close as possible, will the leaves getting burned cause any major problems??? what do you guys do to avoid this??? here are a few pics check out my grow if you are interested

If they are burning it is too close... cause heat stress. Back them up a bit is my suggestion instead of having them as close as you can