Ok just updating my progress,

Went to jaycar this morning and picked up 3 new micro switches. They had the small blades on them. Managed to swap over one long blade from the damaged switch.

Tip it always pays to replace these switches as the ball trough area is high traffic.

Just need the smaller switch for the ball eject, looks to be the same size as the blade switches on the ramps?

Question, does Greg at RTBB stock these?

Thanks in advance.