My Diesel was out growing everyone, so I just Tied the top over to even her out with the rest. You can slowly pull the main stem down and tie her to something, the rest of the stems will grow towards light. Check it out, before and after.
This is after I Lsted her over, can you see it the Top Cola?
Here is same shot, just edited so you can see what I did. I also have support sticks,etc. where I have her bending. Don't want the future weight to pull her down.