I must have missed these messages somehow so sorry for the delay in replying.
Walt: I'm using 10s now. The Strat had 9s originally and I had them changed. The Mexican Strat also has 10s. On my 'to do' list for next year is to learn how to change the Strat strings. I can manage the acoustic string changes (although not the neatest job) so should be able to change Strat strings ... hopefully.
Jim and Ray: Thanks for your encouragement. I've recently bought a G2.1Nu and Charlie's patches so am getting much better tones now which makes me want to practise more (except it's a busy time of the year so I'm not getting as much time as I'd like).
Phil: Thanks for the explanation of the secret codes
Ecca: I get the feeling there's something I still don't know
P.S. Please don't hold the cricket scores against me.

Best wishes
Rosemary