Hi. I have an old ozone sport 5 line kite. Is this right. 2 outside lines = length
Two of the inside lines = length but longer than the outside lines
1 middle line a fair bit smaller than all the rest.
Cheers Billy

Your centre lines have stretched. This is normal and you'll just need to pull in extra trim rope. You can also adjust the connections under the floats to compensate a bit (effectively lengthen the back lines).

Sorry not sure about fifth line.

^Sounds like great advice finger..........NOT!!!!

I shudder to think about how long it would take to list all the things which could (and probably will) go wrong with the above exercise.

Take a look at the Cabrinha tech tip videos on how to tune your bar, there must be something similar (under the floats maybe as Bene says) for your kite, keep looking for a better way or maybe someone who has an Ozone bar could advise.
Have you tried your local shop for advice?

Instead of trying to stretch the other lines, just shorten the stretched lines.
If you have run out of knots to move the lines on to, just make your own.

I did that this morning with my Ozone lines. Not enough wind for a kite, so it made me feel better to play with my junk. (Take that any way you want).

Hey Billy I just checked the line lengths on my 5 line 2008 Edge 2 ,that should be very similar to bar and lines for the Sport and the front lines are 2 inches longer than the back steering lines.That would be due to stretch,couple years ago they were the same,and middle line a fair bit shorter which it should be. If its only a couple of inches in it you should be able to stretch the others to meet but if any more I would shorten them.Its not too difficult to do that yourself with a strong needle and some polyester thread.