/6 rebuild advice
Skip the k seal... You won't need anything like that
True not totally necessary
but as i'm never sure what type of head gasket is used .......
a monotorque uses plastic or fibre rings around water ways and oil ways
some of the older ones use metallic rings
as the coolant PH will drift when its left for years a little dash of the magic in a bottle might help if those metallic bits have started to corrode, corrosion takes up more space than the metal that was there before but its porous
completely appreciate that putting powdery glue in, is not everyone's idea of a sensible move
but it works and you avoid the awful mess it can make of a compromised cooling system. if you take it out once you have given it a short time to do any job it might need to do.
not taking it out is the problem....
Dave