Yes just go to www.myskilog.com/rack and fill in the new changes.
The ski log keeps track of every time you update the settings, allowing you to make incremental changes that will all be recorded in the log.
This comes in handy when you're changing your settings and skiing sets -- every set you log keeps track of your ski settings and what ski you skied on.
Just be sure to update your settings before logging your new set you skied w/the changed settings.
(update your virtual ski just like your real one--make a change, then log the set)