Having had another play today I found I got different figures than yesterday with AFPS05/15 but still suspect that they need tweaking to be correct; but it is a beta test.
The CARE element surprised me a little as the 1.25, 2.25 and 3.25% buttons on the calculator really didn't make much difference to the final pension - a few £100 here or there but no significant change from the 0% figure.