Hi
About 8years ago I had a kite that went weird really suddenly...

It was all fine one week..the next everything was wrong
Turned out to be the bridles
An engineer friend helped decipher the problem..
So yes it can happen quick no idea why and how at all to be honest; maybe it was because I was doing thing like sand bar jumping and things at the time the pull&stretch loadpop etc..
but honestly it was all fine the week before
Got the measurements and redid the bridles and it was 'brilliant' again.
R.e canopies never known of that being so sudden I have one kite at the moment with a worn/stretched canopy that is awful at tacking
Same kite same year good canopy it edges really well...
So it's just a 'downwinder cruise' kite now mostly
Could be the bridles which the pivot/neo has I believe.. they did change suddenly once for some unknown reason..
I would re-measure them...


My guess is its that..
..or something else bar line length etc as said above
Hope this helps