Originally Posted by Granpa

Yeah, most are 3X10mm. Since they have used the self tapping screws already, you shouldn't have to use a tap. I routinely use machine screws to build from the start, but do have to tap the holes part way or they become to difficult to tighten. I use 3X6 on the bumpers and a 3X16 or 18 on the servo mount.

You can replace the shoulder screws in the camber links by using 4X6 flanged tubes. Can't remember the exact length of the screw, but 3X14 or 16 seems right. Part # for the tubes is 50593. I got mine from Tower Hobbies.