Check those line lengths pronto, Tom. It might save you a world o' touble.
Your advise is great, but a week too late for me. I knew that the lines would stretch, so I rotated them the third time I flew. I didn't think the entire process through and tried to use the same setup that I'd used the day before. The net result was that I really didn't have enough brake the day before ... and then I took the longer top lines and moved them to the bottom ... that reduced the brake even more ... ouch! After the fact, I calculated that I was trying to fly in high winds with effectively no brake. That day was interesting.
My lines, LaserPro Gold, seem to have stabalized after the third or forth flying period. I've still adopted a simple procedure where the lines are rotated every time they're unwound and flown. If you use a winder, and not your handles to wind the lines on, it's not any harder than leaving them in the same position every time. With the lark's heading process that is shown in John's B-series video, I've not had any tangles. I checked yesterday and all four lines are well within a quarter inch of each other.
So, check your line lengths is good advice, thanks for passing it on.