Hiya, another point to mention,........
If that is all the training captains are correcting you on, then your doing a fine job. You will find that even a couple of years into the job, and with a few Sims under the belt, there are still some minor debrief points such as this one that get mentioned. After all, they gotta have something to debrief you on.
I agree though, a quick check on the ECAM wheel page should tell ya if it is selected.
Pats on the back all round,.....
FP