After having 2 symmetrical wing tips it was time to perfectly align them and drill the holes in the right tip.
According the manual the tip should be level with the main spar:
Next I aligned the wing to that the outboard rib has a slope of 3 degrees and the trailing edges of the wing are level, the height of the tip is 14,8 cm:
I aligned the right wing identical and aligned the right tip exactly the same:
Next the holes could be drilled:
There is a gap near the leading edge that needs some micro filler: