Need longer plastic screw for Seimitsu Spacer

[grendelrt]

Realized my LS-56 stick is too high in my chewlix, so I made a spacer for it that goes between the metal plate and plastic. Only issue I am having is the screw that holds the metal plate to the plastic is a M3 self threading screw. I need a longer screw around 20mm but have only found it on McMaster Carr (24 bucks for a set). Anyone know a replacement screw that would work or an alternative location to get some?

Think this is the correct screw
https://www.mcmaster.com/90434A164/

 

[grendelrt]

Ended up just ordering the McMaster Carr screws after not being able to find a better version. Can add the STL if anyone needs, height now matches my LS32 in my Diamond Blue and my JLF in my Blast city.

left side with spacer