STILL UNDECIDED

I really don't know if I should do the change over to the new sump system ;-)

It seems to be a real catch22 - do it now and the redo it all again in 4 weeks.

Or choose not to and then run the risk that it does not work as it is supposed to and then have the potential chaos to put a stop-gap in place to keep things running.

There is still additional drilling etc needed - and this can only be done after the change - I would prefer to do that now whilst all tools are at hand.

Guess that answers my own question . :-)