I've found macros in my worksheet are setting Excels Find
to non default parameters.

I fixed this by the following as the workbook closes

Dim Rng As Range
With Range("A1")
Set Rng = .Find(What:="", after:=.Range("A1"), LookIn:=xlFormulas,
LookAt:=xlPart, searchorder:=xlByColumns, searchdirection:=xlNext,
MatchCase:=False, matchbyte:=False)
End With

It works but has a bad side effect. Column A uses
Private Sub Worksheet_SelectionChange to do stuff and this
is being activated each time it's run.

I suspect setting Range to something other than A1 (that does
nothing), it might fix it. But is that a good solution, or is a
completely different approach called for?

Thanks - Kirk