I would leave them phillips, and just develop a feel for how tight they should be...and use a titch of blue loctite..
The main problem is PO's that worry about stuff falling off (hey its a 4) that overtighten..
That, and this is quite important.. proper fitting screwdriver..
They are JIS . and some screwdrivers dont fit properly. the toolkit one might.
2 things with stainless allens,
easy to overtighten (you dont want to look for a 4mm heli=coil kit on Sat nite
)
sometimes has seizing problems
.....................................................................................
Once a point plate gets a bit warped from overtightening, they become harder to adjust and to hold down, , so be a bit carefull.