I've told people this for a long time.
The "kit" they give you (fits many models) doesn't tell you much, and some models use the washer, some do not.
The best way I found to use the All Balls/Moose or other kits is to stack up all your old OEM stuff on a flat table and compare it to the new stuff. Because once you press on that lower bearing you can't either add or remove the washer.
That's what has always worked for me.
All our government does is distract us while they steal from us, misspend our tax $ and ruin our country