Hi John,
The strings are due for a change anyway so if I fit the Newtones and experience problems I can always fit another set of Elixirs rather than faffing with major settings alterations that could upset the whole shebang.
I have no problems with the Elixirs as they sound good and last a hugely long time before losing any tonal qualities, but I was tempted by the wound third option of the Newtones and slightly heavier gauge all round, hoping for a fuller and more rounded sound than I currently have. My mex strat's very bright and punchy, which I like - as do many others who have played it or listened, but for the earlier Shads material I like the sounds created by guitars with slightly heavier strings. I realise these 11s are still medium light but I figured they might be one step nearer 'that sound' than maybe the 10s with plain third currently fitted.
The packet blurb claims: " A lower tension to pitch lets the string vibrate more freely and gives unsurpassed playability."
This may suggest those extra adjustments might not be necessary - who knows - and until I've tried a set I'll always be wondering . . .

I'll repost here or under the general guitaring section, as it's now not Burns Guitar specifically related, to keep you appraised of progress.
Thanks again, folks, for the advice etc.
Regards,
Martyn