[ymko]

the "step" values, is that the number of steps you are into the crafting? or how many left finishing it with basic skills?

I am having a hard time setting it up when to use progress and when to use quality to make it finish optimal.

Step is how many steps you are into the craft. That's for people who have a rotation they wanna use 24/7.

As for your problem, manually use the progress skill you have put into the SkillManager. Determine how many steps you need to finish. A calculator coming soon ©
Then:
Progress Skill
-> cp <= CostOfDurabilitySkill - 1
-> durability <= your determined steps * 10