They all have washers in them, at least all 7 of mine do. That is normal.
Is the base black or grey? The 4-ways are supposed to be grey, and the 8-ways black.
On some 4-ways you can still just barely hit the diagonals. The Ms. Pac/Galaga replacement 4-way can hit the diagonals if you try hard to do it (hard to hold it there, but you can trigger them, learned that when I accidently played Robotron with one of them and an 8-way).