can my Baxi solo 30/4pf pilot light be adjusted?

I just noticed the pilot on my baxi solo 30/4pfstands at 4 - 5 inches high a tad to much to my mind.
What sort of height should it be?
can it be adjusted manully? if so how?
If it has no adjusted is this a sign that what ever controls it is failling?
It does bring a yellow glow to the viewing window, other than that all the burners are working and hold astrong blue colour.