I'm trying to find some rigid freestyle forks for my Peugeot 501 at the moment and its a nightmare. RJ the bike guy has some videos about this subject on youtube.
Basically its not possible to use 1 1/8 steerer fork on a 1" head tube because once the headset cups are in place it just wont fit.
Struggling to find some decent rigid forks with a 1" steerer, they are very rare and expensive. If you find any let me know!