I had a look last night and i saw on the game card down the bottom right a set of pins that said switches, i thought that they had been removed or something.
But when i then looked, right down the bottom right of the card, very hidden behind wires was the set of Bank 1 switches, i had to take the whole card of the machine to get to the switches.
Thanks for all your help, i have now changed the stake to £200 jackpot on 20p play!
Paul