Question about Light Placement/Space Issues

Ok so I have a MasterKush girly about 4-5 weeks into flowering (with CFLs).
Even though its only about 20-24" tall (after a little LST), the plants reached up to the CFL which was directly above it and a few leaves got a lil burned, so I had to change my light set up quite a bit.
Now, my growbox (rubbermaids - which are a bitch with space control) has lights that are about even with the top of the top cola (but off to the the side a few inches so there wont be any more burning), and then a few which are lower for side lighting. While I've noticed CFLs don't really cause any explosive growth, the mid-low colas have definitely fattened up more since adjusting...
BUT everyone seems to take the most pride in their top colas so I'm a little concerned. Will this be a problem in terms of the overall yield/potency potential?

I can post pictures but don't think they'll be all that necessary.

Thanks for any answers

I seem to be having the same type of problem, plants getting too tall. I have LST'd and that seems to be the best option. CFL's run hot...put your hand about an inch under them, you'll see. You might want to think about flowering earlier next time.