Thanks guys.
I'll explain a little more.......
The market here in the UK is still largely based around smaller providers that don't have the same availability in stock as bigger companies. This is great for getting a local, amiable service but not good for playing around with shafts. Trying every possible shaft before buying just isn't an option because the stock isn't so readily available. This means doing your research before forking out the money is essential if you don't want to end up with the wrong shaft.
Low ball flight isn't a problem as I play a lot of links golf (and grew up doing so) but my 9.5 degree R5 flies at the same height as the 10.5 degree R11S at the moment. So, the issue really is just to get a softer tipped shaft (again, I think) which, hopefully, will mean greater accuracy and some added distance on the R11S (I'm more than happy to play around with the club settings as, believe me, there isn't a set up I haven't tried!). The R5 and the R11S are currently the same length but the R5 is straighter, hence me currently sticking with the R5. I reckon however that with the right shaft I could add 10 - 15 yards to the R11S.
And finally, before you guys think I'm better than I actually am, because of different handicap systems a handicap of 8 over here is approximately 10 or 11 over there.
Thanks again. Very much appreciated.