by Audi1 » Wed Jul 15, 2015 8:19 pm
I usually use 5mm M2 grub screws on the bottom and 3mm M2 grub screws on the top; seems to work for most Slot.It cars. 6mm M2's also works fine for the bottoms, but I think they would be too long for the tops. I agree with Harry that the oval point M2 grub screws from SCC are the way to go from the standpoint of least front axle resistance.
Allan