I find careful synthesis works better and I use a step profiles for crafting rather than skills. It's easier to manage and fine tune it. Drop box is a step profile for careful synthesis and below is how I would do a rapid synthesis profile
https://www.dropbox.com/s/d8f4kr3sc3k8qp...y.lua?dl=0
Rapid synth
2
0
next RS
3
2
next RS
4
3
Next RS
5
4
https://www.dropbox.com/s/d8f4kr3sc3k8qp...y.lua?dl=0
Rapid synth
2
0
next RS
3
2
next RS
4
3
Next RS
5
4