MMM Switch Replacement?

[georgec]

My MMM switch finally gave up the ghost after a year of taking it apart after almost every race to clean it. I have bypassed the switch for now but prefer running with one. The switch is the only problem I have ever had with the two MMM's that I own but it has been a persistent one on both of them. My question, does anyone know of a replacement switch that wouldn't be such a maintenance problem as the OEM or does Castle have a upgrade. I would like to have one with the same foot print so it will fit into my TRX esc mount.
Thanks, GeorgeC