Thanks for the nice comments guys.
Mr X. Simon (Jollygreen) will give you the tech bit
When I run on V Power only I keep the Map 1 switch on. If I have any % of Methanol in the tank Map 1 will still be ok.
With a 20% mix I need to switch to Map 2.
With Map 2 selected running V Power only is a no no and could cause damage to pistons.
Mixing Meths in one tank I imagine would produce a cooler combustion throughout?