Just a bit of clarification, please- are you judging the line length being different by how they are wound on the winder or have you staked them out and compared them?
Lines that are the exact same length often look wrong when wound on the winder.
As of this morning, staked out and about a 4 inch difference between the longest and shortest, with the other two at different lengths in between. It's written Spectre #80 on the winder which is what the kite shop had. I looked up Spectre line and found not much at all, and got lots of hits on Spectra #80. And again, I know that my orig. post sort of sounded angry at the store, well maybe more frustrated. But the store's a good store and I don't have too much of a quibble with them.
Now, I don't think the lines were prestretched, which may be accounting for some (all) of this issue. Of course I know next to nothing about kite line except that LPG is good and comes pre-stretched so this might not happen in the future, but you pay a little more for it. I'm thinking that, just maybe, somebody might need to do some kite line research
Which is why I'm here.
I do feel as though Jonesy and Sailor99 have given me enough info to fix the situation so I'm not upset at all. Besides learning proper maintenance is as (if not more) important than flying. If I can't tie the knots or keep up the kite, I probably shouldn't be doing this at all.
Any tips on stretching line on the ground prior to launch? Even a URL or a point in the direction where somebody else has already addressed it, if you don't want to rewrite the whole thing.