It will work, but is a pain to use. See if you can borrow a better kit from them with their tool loaner program. One like this:
https://harborfreight.com/disc-brake-pad-and-caliper-service-tool-kit-11-pc-63264.html
This kit occasionally goes on sale for half price, if you want to buy one...
The 99%(probably 98.5%, actually) was a lot brighter than I was expecting. Not anywhere near as dark as the 100% swath.
Edit: In Columbia, SC the temperature dropped 12 degrees.
Well, looks like they are still in business after fourteen years.
http://www.lincolnsofdistinction.org/vbulletin/showthread.php?2263-Gen-1-Headlight-fix&highlight=Alsa