Topping duing pre-flowering?

Cfl grow, White Rhino, Lemon Skunk and two good bag-seed plants.
Here is the problem; 1&1/2 weeks into 12/12 the bag seed plants are stretching considerably and I'm running out of room (and light) for them in my cabinet. I want to stop their vertical growth. They were both topped during veg. and have 4 main stems. Question: What will happen if I top them again? Will it adversly affect flowering? Will it slow down the plant showing sex?
PS Light distance is not causing the stretching. I've kept the 2700K, Cfl's very close to the tops and sides of the plants.
Gimme some love all you with experience!!!!!!!!!!!!
What can I expect if I go through with this?

i had this problem too and i topped i think longer than this into flowering it just helped out the rest of the buds and it still grew upwards a lil bit but not as much

DontBogart said:

What will happen if I top them again? Will it adversly affect flowering? Will it slow down the plant showing sex?
PS Light distance is not causing the stretching. I've kept the 2700K, Cfl's very close to the tops and sides of the plants.

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Do what you have to do, I'd just tie them down myself they've probably almost finished stretching by now anyways.

dude im at the same time and problem with my 2 fems, heres what i did 2 days ago and its amazing

i vegged too long (long story) and now there on my cfls, one was topped in veg and has 2 massive shoots on it as tops, i put a piece of fishing string through the lid of the 6" pot, and gently pulled down one of the shoot before it snapped, within a day the top turned right side up and the side growth did too. im doing the other tonight.

2nd one was a main cola plant, i bent over the top and it turned up aswell, i cant wait to see what happens, its growing great still

Thanks you guys. I dont believe I have room to LST, however a pair of sharp scissors is readily available!

Clone the top atleast....