And, it went so-so 35 years in between, but now it's done.
Two pairs of downhill skis and a pair of cross-country ski footwear. Also took the opportunity to sharpen steel edges on skis which went well.

It was much more fun than you remember. As a kid, I kept on with slalom skis almost always. They were always preppade ahead of the races in the best possible way.

Great tipps are now on the web course.
Relating to prepare slalom skis, I think Alpine Garaget page is good.
Videos are available on how to sharpen edges, Bag edges, dikes

The garage alpine ski with care Freed Ride gang

Otherwise, there is what seems like forever on youtube about waxing.