I think the main microswitches (the ones which switch the two elements,
controlled via the power dial) on my T80i shower are dead - or at least one.
(I resurrected one a few years back, but it's probably time to get new
ones).

I know they're available from Triton, but they appear to be fairly generic
microswitches and quite expensive for that - anybody got an idea of
appropriate replacements from elsewhere?