[Jaxon]

http://wiki.project1999.com/Tradeskills

For things w/ lower than trivial of 68:
Chance of success = MIN(Skill - Trivial + 66, 95)

Chance of success = MIN(43 - 41 + 66, 95) = 68%

Trivial just indicates that you can no longer gain skill from the combine, not that you have the maximum chance of success. If you want a 95% chance of success on a combine with a trivial of 41 you need to raise your skill to 70.