Thanks for your interest Sceotend.
If you are happy with the 8m it would be better not to change...
I did it cos somedays my kite was continously folding wingtips.
About your comments :
When you move C level , B also moves (half distance). once C is on place, you can change B, then C wont move.
This is why I said C is independent from B, in the manual they also start with C level.
I use common plan knot to trim
M. If it is not enough for your 8m try and "eight knot"
Anyway i never had a P4 8m. Had the 11m but unluckily I never tried this mod.
Let us know if it solves the wingtip issue on the 8 m